/*
 * Copyright (C) 2015 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package android.telephony;

import android.annotation.NonNull;
import android.annotation.Nullable;
import android.annotation.RequiresPermission;
import android.annotation.SuppressLint;
import android.annotation.SystemApi;
import android.annotation.SystemService;
import android.content.Context;
import android.os.PersistableBundle;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.service.carrier.CarrierService;
import android.telephony.ims.ImsReasonInfo;

import com.android.internal.telephony.ICarrierConfigLoader;

Provides access to telephony configuration values that are carrier-specific.
/**
 * Provides access to telephony configuration values that are carrier-specific.
 */
@SystemService(Context.CARRIER_CONFIG_SERVICE)
public class CarrierConfigManager {
    private final static String TAG = "CarrierConfigManager";

    
Extra included in ACTION_CARRIER_CONFIG_CHANGED to indicate the slot index that the broadcast is for. /**
     * Extra included in {@link #ACTION_CARRIER_CONFIG_CHANGED} to indicate the slot index that the
     * broadcast is for.
     */
    public static final String EXTRA_SLOT_INDEX = "android.telephony.extra.SLOT_INDEX";

    
Optional extra included in ACTION_CARRIER_CONFIG_CHANGED to indicate the subscription index that the broadcast is for, if a valid one is available. /**
     * Optional extra included in {@link #ACTION_CARRIER_CONFIG_CHANGED} to indicate the
     * subscription index that the broadcast is for, if a valid one is available.
     */
    public static final String EXTRA_SUBSCRIPTION_INDEX =
            SubscriptionManager.EXTRA_SUBSCRIPTION_INDEX;

    
@hide
/**
     * @hide
     */
    public CarrierConfigManager() {
    }

    
This intent is broadcast by the system when carrier config changes. An int is specified in EXTRA_SLOT_INDEX to indicate the slot index that this is for. An optional int extra EXTRA_SUBSCRIPTION_INDEX is included to indicate the subscription index if a valid one is available for the slot index. /**
     * This intent is broadcast by the system when carrier config changes. An int is specified in
     * {@link #EXTRA_SLOT_INDEX} to indicate the slot index that this is for. An optional int extra
     * {@link #EXTRA_SUBSCRIPTION_INDEX} is included to indicate the subscription index if a valid
     * one is available for the slot index.
     */
    public static final String
            ACTION_CARRIER_CONFIG_CHANGED = "android.telephony.action.CARRIER_CONFIG_CHANGED";

    // Below are the keys used in carrier config bundles. To add a new variable, define the key and
    // give it a default value in sDefaults. If you need to ship a per-network override in the
    // system image, that can be added in packages/apps/CarrierConfig.

    
This flag specifies whether VoLTE availability is based on provisioning. By default this is
false.
/**
     * This flag specifies whether VoLTE availability is based on provisioning. By default this is
     * false.
     */
    public static final String
            KEY_CARRIER_VOLTE_PROVISIONED_BOOL = "carrier_volte_provisioned_bool";

    
Boolean indicating if the "Call forwarding" item is visible in the Call Settings menu.
true means visible. false means gone.
@hide
/**
     * Boolean indicating if the "Call forwarding" item is visible in the Call Settings menu.
     * true means visible. false means gone.
     * @hide
     */
    public static final String KEY_CALL_FORWARDING_VISIBILITY_BOOL =
            "call_forwarding_visibility_bool";

    
Boolean indicating if the "Caller ID" item is visible in the Additional Settings menu.
true means visible. false means gone.
@hide
/**
     * Boolean indicating if the "Caller ID" item is visible in the Additional Settings menu.
     * true means visible. false means gone.
     * @hide
     */
    public static final String KEY_ADDITIONAL_SETTINGS_CALLER_ID_VISIBILITY_BOOL =
            "additional_settings_caller_id_visibility_bool";

    
Boolean indicating if the "Call Waiting" item is visible in the Additional Settings menu.
true means visible. false means gone.
@hide
/**
     * Boolean indicating if the "Call Waiting" item is visible in the Additional Settings menu.
     * true means visible. false means gone.
     * @hide
     */
    public static final String KEY_ADDITIONAL_SETTINGS_CALL_WAITING_VISIBILITY_BOOL =
            "additional_settings_call_waiting_visibility_bool";

   
Boolean indicating if the "Call barring" item is visible in the Call Settings menu.
true means visible. false means gone.
@hide
/**
    * Boolean indicating if the "Call barring" item is visible in the Call Settings menu.
    * true means visible. false means gone.
    * @hide
    */
    public static final String KEY_CALL_BARRING_VISIBILITY_BOOL =
            "call_barring_visibility_bool";

    
Flag indicating whether or not changing the call barring password via the "Call Barring"
settings menu is supported. If true, the option will be visible in the "Call
Barring" settings menu. If false, the option will not be visible.
Enabled by default.
@hide
/**
     * Flag indicating whether or not changing the call barring password via the "Call Barring"
     * settings menu is supported. If true, the option will be visible in the "Call
     * Barring" settings menu. If false, the option will not be visible.
     *
     * Enabled by default.
     * @hide
     */
    public static final String KEY_CALL_BARRING_SUPPORTS_PASSWORD_CHANGE_BOOL =
            "call_barring_supports_password_change_bool";

    
Flag indicating whether or not deactivating all call barring features via the "Call Barring"
settings menu is supported. If true, the option will be visible in the "Call
Barring" settings menu. If false, the option will not be visible.
Enabled by default.
@hide
/**
     * Flag indicating whether or not deactivating all call barring features via the "Call Barring"
     * settings menu is supported. If true, the option will be visible in the "Call
     * Barring" settings menu. If false, the option will not be visible.
     *
     * Enabled by default.
     * @hide
     */
    public static final String KEY_CALL_BARRING_SUPPORTS_DEACTIVATE_ALL_BOOL =
            "call_barring_supports_deactivate_all_bool";

    
Flag indicating whether the Phone app should ignore EVENT_SIM_NETWORK_LOCKED
events from the Sim.
If true, this will prevent the IccNetworkDepersonalizationPanel from being shown, and
effectively disable the "Sim network lock" feature.
/**
     * Flag indicating whether the Phone app should ignore EVENT_SIM_NETWORK_LOCKED
     * events from the Sim.
     * If true, this will prevent the IccNetworkDepersonalizationPanel from being shown, and
     * effectively disable the "Sim network lock" feature.
     */
    public static final String
            KEY_IGNORE_SIM_NETWORK_LOCKED_EVENTS_BOOL = "ignore_sim_network_locked_events_bool";

    
When checking if a given number is the voicemail number, if this flag is true
then in addition to comparing the given number to the voicemail number, we also compare it
to the mdn. If this flag is false, the given number is only compared to the voicemail number.
By default this value is false.
/**
     * When checking if a given number is the voicemail number, if this flag is true
     * then in addition to comparing the given number to the voicemail number, we also compare it
     * to the mdn. If this flag is false, the given number is only compared to the voicemail number.
     * By default this value is false.
     */
    public static final String KEY_MDN_IS_ADDITIONAL_VOICEMAIL_NUMBER_BOOL =
            "mdn_is_additional_voicemail_number_bool";

    
Flag indicating whether the Phone app should provide a "Dismiss" button on the SIM network
unlock screen. The default value is true. If set to false, there will be *no way* to dismiss
the SIM network unlock screen if you don't enter the correct unlock code. (One important
consequence: there will be no way to make an Emergency Call if your SIM is network-locked and
you don't know the PIN.)
/**
     * Flag indicating whether the Phone app should provide a "Dismiss" button on the SIM network
     * unlock screen. The default value is true. If set to false, there will be *no way* to dismiss
     * the SIM network unlock screen if you don't enter the correct unlock code. (One important
     * consequence: there will be no way to make an Emergency Call if your SIM is network-locked and
     * you don't know the PIN.)
     */
    public static final String
            KEY_SIM_NETWORK_UNLOCK_ALLOW_DISMISS_BOOL = "sim_network_unlock_allow_dismiss_bool";

    
Flag indicating if the phone is a world phone /** Flag indicating if the phone is a world phone */
    public static final String KEY_WORLD_PHONE_BOOL = "world_phone_bool";

    
Flag to require or skip entitlement checks.
If true, entitlement checks will be executed if device has been configured for it,
If false, entitlement checks will be skipped.
/**
     * Flag to require or skip entitlement checks.
     * If true, entitlement checks will be executed if device has been configured for it,
     * If false, entitlement checks will be skipped.
     */
    public static final String
            KEY_REQUIRE_ENTITLEMENT_CHECKS_BOOL = "require_entitlement_checks_bool";

    
Flag indicating whether radio is to be restarted on error PDP_FAIL_REGULAR_DEACTIVATION
This is false by default.
/**
     * Flag indicating whether radio is to be restarted on error PDP_FAIL_REGULAR_DEACTIVATION
     * This is false by default.
     */
    public static final String KEY_RESTART_RADIO_ON_PDP_FAIL_REGULAR_DEACTIVATION_BOOL =
            "restart_radio_on_pdp_fail_regular_deactivation_bool";

    
A list of failure cause codes that will trigger a modem restart when telephony receiving
one of those during data setup. The cause codes are defined in 3GPP TS 24.008 Annex I and
TS 24.301 Annex B.
@hide
/**
     * A list of failure cause codes that will trigger a modem restart when telephony receiving
     * one of those during data setup. The cause codes are defined in 3GPP TS 24.008 Annex I and
     * TS 24.301 Annex B.
     * @hide
     */
    public static final String KEY_RADIO_RESTART_FAILURE_CAUSES_INT_ARRAY =
            "radio_restart_failure_causes_int_array";

    
If true, enable vibration (haptic feedback) for key presses in the EmergencyDialer activity.
The pattern is set on a per-platform basis using config_virtualKeyVibePattern. To be
consistent with the regular Dialer, this value should agree with the corresponding values
from config.xml under apps/Contacts.
/**
     * If true, enable vibration (haptic feedback) for key presses in the EmergencyDialer activity.
     * The pattern is set on a per-platform basis using config_virtualKeyVibePattern. To be
     * consistent with the regular Dialer, this value should agree with the corresponding values
     * from config.xml under apps/Contacts.
     */
    public static final String
            KEY_ENABLE_DIALER_KEY_VIBRATION_BOOL = "enable_dialer_key_vibration_bool";

    
Flag indicating if dtmf tone type is enabled /** Flag indicating if dtmf tone type is enabled */
    public static final String KEY_DTMF_TYPE_ENABLED_BOOL = "dtmf_type_enabled_bool";

    
Flag indicating if auto retry is enabled /** Flag indicating if auto retry is enabled */
    public static final String KEY_AUTO_RETRY_ENABLED_BOOL = "auto_retry_enabled_bool";

    
Determine whether we want to play local DTMF tones in a call, or just let the radio/BP handle
playing of the tones.
/**
     * Determine whether we want to play local DTMF tones in a call, or just let the radio/BP handle
     * playing of the tones.
     */
    public static final String KEY_ALLOW_LOCAL_DTMF_TONES_BOOL = "allow_local_dtmf_tones_bool";

    
Determines if the carrier requires that a tone be played to the remote party when an app is
recording audio during a call (e.g. using a call recording app).

Note: This requires the Telephony config_supports_telephony_audio_device overlay to be true
in order to work.
@hide
/**
     * Determines if the carrier requires that a tone be played to the remote party when an app is
     * recording audio during a call (e.g. using a call recording app).
     * <p>
     * Note: This requires the Telephony config_supports_telephony_audio_device overlay to be true
     * in order to work.
     * @hide
     */
    public static final String KEY_PLAY_CALL_RECORDING_TONE_BOOL = "play_call_recording_tone_bool";
    
Determines if the carrier requires converting the destination number before sending out an
SMS. Certain networks and numbering plans require different formats.
/**
     * Determines if the carrier requires converting the destination number before sending out an
     * SMS. Certain networks and numbering plans require different formats.
     */
    public static final String KEY_SMS_REQUIRES_DESTINATION_NUMBER_CONVERSION_BOOL=
            "sms_requires_destination_number_conversion_bool";

    
If true, show an onscreen "Dial" button in the dialer. In practice this is used on all
platforms, even the ones with hard SEND/END keys, but for maximum flexibility it's controlled
by a flag here (which can be overridden on a per-product basis.)
/**
     * If true, show an onscreen "Dial" button in the dialer. In practice this is used on all
     * platforms, even the ones with hard SEND/END keys, but for maximum flexibility it's controlled
     * by a flag here (which can be overridden on a per-product basis.)
     */
    public static final String KEY_SHOW_ONSCREEN_DIAL_BUTTON_BOOL = "show_onscreen_dial_button_bool";

    
Determines if device implements a noise suppression device for in call audio. /** Determines if device implements a noise suppression device for in call audio. */
    public static final String
            KEY_HAS_IN_CALL_NOISE_SUPPRESSION_BOOL = "has_in_call_noise_suppression_bool";

    
Determines if the current device should allow emergency numbers to be logged in the Call Log.
(Some carriers require that emergency calls *not* be logged, presumably to avoid the risk of
accidental redialing from the call log UI. This is a good idea, so the default here is
false.)
/**
     * Determines if the current device should allow emergency numbers to be logged in the Call Log.
     * (Some carriers require that emergency calls *not* be logged, presumably to avoid the risk of
     * accidental redialing from the call log UI. This is a good idea, so the default here is
     * false.)
     */
    public static final String
            KEY_ALLOW_EMERGENCY_NUMBERS_IN_CALL_LOG_BOOL = "allow_emergency_numbers_in_call_log_bool";

    
A string array containing numbers that shouldn't be included in the call log.
@hide
/**
     * A string array containing numbers that shouldn't be included in the call log.
     * @hide
     */
    public static final String KEY_UNLOGGABLE_NUMBERS_STRING_ARRAY =
            "unloggable_numbers_string_array";

    
If true, removes the Voice Privacy option from Call Settings /** If true, removes the Voice Privacy option from Call Settings */
    public static final String KEY_VOICE_PRIVACY_DISABLE_UI_BOOL = "voice_privacy_disable_ui_bool";

    
Control whether users can reach the carrier portions of Cellular Network Settings. /** Control whether users can reach the carrier portions of Cellular Network Settings. */
    public static final String
            KEY_HIDE_CARRIER_NETWORK_SETTINGS_BOOL = "hide_carrier_network_settings_bool";

    
Control whether users receive a simplified network settings UI and improved network
selection.
/**
     * Control whether users receive a simplified network settings UI and improved network
     * selection.
     */
    public static final String
            KEY_SIMPLIFIED_NETWORK_SETTINGS_BOOL = "simplified_network_settings_bool";

    
Control whether users can reach the SIM lock settings. /** Control whether users can reach the SIM lock settings. */
    public static final String
            KEY_HIDE_SIM_LOCK_SETTINGS_BOOL = "hide_sim_lock_settings_bool";

    
Control whether users can edit APNs in Settings. /** Control whether users can edit APNs in Settings. */
    public static final String KEY_APN_EXPAND_BOOL = "apn_expand_bool";

    
Control whether users can choose a network operator. /** Control whether users can choose a network operator. */
    public static final String KEY_OPERATOR_SELECTION_EXPAND_BOOL = "operator_selection_expand_bool";

    
Used in Cellular Network Settings for preferred network type. /** Used in Cellular Network Settings for preferred network type. */
    public static final String KEY_PREFER_2G_BOOL = "prefer_2g_bool";

    
Show cdma network mode choices 1x, 3G, global etc. /** Show cdma network mode choices 1x, 3G, global etc. */
    public static final String KEY_SHOW_CDMA_CHOICES_BOOL = "show_cdma_choices_bool";

    
CDMA activation goes through HFA /** CDMA activation goes through HFA */
    public static final String KEY_USE_HFA_FOR_PROVISIONING_BOOL = "use_hfa_for_provisioning_bool";

    
CDMA activation goes through OTASP.

TODO: This should be combined with config_use_hfa_for_provisioning and implemented as an enum
(NONE, HFA, OTASP).
/**
     * CDMA activation goes through OTASP.
     * <p>
     * TODO: This should be combined with config_use_hfa_for_provisioning and implemented as an enum
     * (NONE, HFA, OTASP).
     */
    public static final String KEY_USE_OTASP_FOR_PROVISIONING_BOOL = "use_otasp_for_provisioning_bool";

    
Display carrier settings menu if true /** Display carrier settings menu if true */
    public static final String KEY_CARRIER_SETTINGS_ENABLE_BOOL = "carrier_settings_enable_bool";

    
Does not display additional call setting for IMS phone based on GSM Phone /** Does not display additional call setting for IMS phone based on GSM Phone */
    public static final String KEY_ADDITIONAL_CALL_SETTING_BOOL = "additional_call_setting_bool";

    
Show APN Settings for some CDMA carriers /** Show APN Settings for some CDMA carriers */
    public static final String KEY_SHOW_APN_SETTING_CDMA_BOOL = "show_apn_setting_cdma_bool";

    
After a CDMA conference call is merged, the swap button should be displayed. /** After a CDMA conference call is merged, the swap button should be displayed. */
    public static final String KEY_SUPPORT_SWAP_AFTER_MERGE_BOOL = "support_swap_after_merge_bool";

    
Determine whether user can edit voicemail number in Settings.
/**
     * Determine whether user can edit voicemail number in Settings.
     */
    public static final String KEY_EDITABLE_VOICEMAIL_NUMBER_SETTING_BOOL =
            "editable_voicemail_number_setting_bool";

    
Since the default voicemail number is empty, if a SIM card does not have a voicemail number
available the user cannot use voicemail. This flag allows the user to edit the voicemail
number in such cases, and is false by default.
/**
     * Since the default voicemail number is empty, if a SIM card does not have a voicemail number
     * available the user cannot use voicemail. This flag allows the user to edit the voicemail
     * number in such cases, and is false by default.
     */
    public static final String KEY_EDITABLE_VOICEMAIL_NUMBER_BOOL= "editable_voicemail_number_bool";

    
Determine whether the voicemail notification is persistent in the notification bar. If true,
the voicemail notifications cannot be dismissed from the notification bar.
/**
     * Determine whether the voicemail notification is persistent in the notification bar. If true,
     * the voicemail notifications cannot be dismissed from the notification bar.
     */
    public static final String
            KEY_VOICEMAIL_NOTIFICATION_PERSISTENT_BOOL = "voicemail_notification_persistent_bool";

    
For IMS video over LTE calls, determines whether video pause signalling is supported. /** For IMS video over LTE calls, determines whether video pause signalling is supported. */
    public static final String
            KEY_SUPPORT_PAUSE_IMS_VIDEO_CALLS_BOOL = "support_pause_ims_video_calls_bool";

    
Disables dialing "*228" (OTASP provisioning) on CDMA carriers where it is not supported or is
potentially harmful by locking the SIM to 3G.
/**
     * Disables dialing "*228" (OTASP provisioning) on CDMA carriers where it is not supported or is
     * potentially harmful by locking the SIM to 3G.
     */
    public static final String
            KEY_DISABLE_CDMA_ACTIVATION_CODE_BOOL = "disable_cdma_activation_code_bool";

    
List of RIL radio technologies (See ServiceState RIL_RADIO_TECHNOLOGY_* constants) which support only a single data connection at a time. Some carriers do not support multiple pdp on UMTS. /**
     * List of RIL radio technologies (See {@link ServiceState} {@code RIL_RADIO_TECHNOLOGY_*}
     * constants) which support only a single data connection at a time. Some carriers do not
     * support multiple pdp on UMTS.
     */
    public static final String
            KEY_ONLY_SINGLE_DC_ALLOWED_INT_ARRAY = "only_single_dc_allowed_int_array";

    
Override the platform's notion of a network operator being considered roaming.
Value is string array of MCCMNCs to be considered roaming for 3GPP RATs.
/**
     * Override the platform's notion of a network operator being considered roaming.
     * Value is string array of MCCMNCs to be considered roaming for 3GPP RATs.
     */
    public static final String
            KEY_GSM_ROAMING_NETWORKS_STRING_ARRAY = "gsm_roaming_networks_string_array";

    
Override the platform's notion of a network operator being considered not roaming.
Value is string array of MCCMNCs to be considered not roaming for 3GPP RATs.
/**
     * Override the platform's notion of a network operator being considered not roaming.
     * Value is string array of MCCMNCs to be considered not roaming for 3GPP RATs.
     */
    public static final String
            KEY_GSM_NONROAMING_NETWORKS_STRING_ARRAY = "gsm_nonroaming_networks_string_array";

    
Override the device's configuration for the ImsService to use for this SIM card.
/**
     * Override the device's configuration for the ImsService to use for this SIM card.
     */
    public static final String KEY_CONFIG_IMS_PACKAGE_OVERRIDE_STRING =
            "config_ims_package_override_string";

    
Override the package that will manage SubscriptionPlan information instead of the CarrierService that defines this value. 
See Also:
SubscriptionManager.getSubscriptionPlans(int)
SubscriptionManager.setSubscriptionPlans(int, List<SubscriptionPlan>)/**
     * Override the package that will manage {@link SubscriptionPlan}
     * information instead of the {@link CarrierService} that defines this
     * value.
     *
     * @see SubscriptionManager#getSubscriptionPlans(int)
     * @see SubscriptionManager#setSubscriptionPlans(int, java.util.List)
     */
    @SystemApi
    public static final String KEY_CONFIG_PLANS_PACKAGE_OVERRIDE_STRING =
            "config_plans_package_override_string";

    
Override the platform's notion of a network operator being considered roaming.
Value is string array of SIDs to be considered roaming for 3GPP2 RATs.
/**
     * Override the platform's notion of a network operator being considered roaming.
     * Value is string array of SIDs to be considered roaming for 3GPP2 RATs.
     */
    public static final String
            KEY_CDMA_ROAMING_NETWORKS_STRING_ARRAY = "cdma_roaming_networks_string_array";

    
Override the platform's notion of a network operator being considered non roaming.
Value is string array of SIDs to be considered not roaming for 3GPP2 RATs.
/**
     * Override the platform's notion of a network operator being considered non roaming.
     * Value is string array of SIDs to be considered not roaming for 3GPP2 RATs.
     */
    public static final String
            KEY_CDMA_NONROAMING_NETWORKS_STRING_ARRAY = "cdma_nonroaming_networks_string_array";

    
Override the platform's notion of a network operator being considered non roaming.
If true all networks are considered as home network a.k.a non-roaming.  When false,
the 2 pairs of CMDA and GSM roaming/non-roaming arrays are consulted.
See Also:
KEY_GSM_ROAMING_NETWORKS_STRING_ARRAY
KEY_GSM_NONROAMING_NETWORKS_STRING_ARRAY
KEY_CDMA_ROAMING_NETWORKS_STRING_ARRAY
KEY_CDMA_NONROAMING_NETWORKS_STRING_ARRAY/**
     * Override the platform's notion of a network operator being considered non roaming.
     * If true all networks are considered as home network a.k.a non-roaming.  When false,
     * the 2 pairs of CMDA and GSM roaming/non-roaming arrays are consulted.
     *
     * @see #KEY_GSM_ROAMING_NETWORKS_STRING_ARRAY
     * @see #KEY_GSM_NONROAMING_NETWORKS_STRING_ARRAY
     * @see #KEY_CDMA_ROAMING_NETWORKS_STRING_ARRAY
     * @see #KEY_CDMA_NONROAMING_NETWORKS_STRING_ARRAY
     */
    public static final String
            KEY_FORCE_HOME_NETWORK_BOOL = "force_home_network_bool";

    
Flag specifying whether VoLTE should be available for carrier, independent of carrier
provisioning. If false: hard disabled. If true: then depends on carrier provisioning,
availability, etc.
/**
     * Flag specifying whether VoLTE should be available for carrier, independent of carrier
     * provisioning. If false: hard disabled. If true: then depends on carrier provisioning,
     * availability, etc.
     */
    public static final String KEY_CARRIER_VOLTE_AVAILABLE_BOOL = "carrier_volte_available_bool";

    
Flag specifying whether video telephony is available for carrier. If false: hard disabled.
If true: then depends on carrier provisioning, availability, etc.
/**
     * Flag specifying whether video telephony is available for carrier. If false: hard disabled.
     * If true: then depends on carrier provisioning, availability, etc.
     */
    public static final String KEY_CARRIER_VT_AVAILABLE_BOOL = "carrier_vt_available_bool";

    
Flag specifying whether the carrier wants to notify the user when a VT call has been handed
over from WIFI to LTE.
 The handover notification is sent as a TelephonyManager.EVENT_HANDOVER_VIDEO_FROM_WIFI_TO_LTE Connection event, which an InCallService should use to trigger the display of a user-facing message. 

The Connection event is sent to the InCallService only once, the first time it occurs.
@hide
/**
     * Flag specifying whether the carrier wants to notify the user when a VT call has been handed
     * over from WIFI to LTE.
     * <p>
     * The handover notification is sent as a
     * {@link TelephonyManager#EVENT_HANDOVER_VIDEO_FROM_WIFI_TO_LTE}
     * {@link android.telecom.Connection} event, which an {@link android.telecom.InCallService}
     * should use to trigger the display of a user-facing message.
     * <p>
     * The Connection event is sent to the InCallService only once, the first time it occurs.
     * @hide
     */
    public static final String KEY_NOTIFY_HANDOVER_VIDEO_FROM_WIFI_TO_LTE_BOOL =
            "notify_handover_video_from_wifi_to_lte_bool";

    
Flag specifying whether the carrier wants to notify the user when a VT call has been handed
over from LTE to WIFI.
 The handover notification is sent as a TelephonyManager.EVENT_HANDOVER_VIDEO_FROM_LTE_TO_WIFI Connection event, which an InCallService should use to trigger the display of a user-facing message. 
@hide
/**
     * Flag specifying whether the carrier wants to notify the user when a VT call has been handed
     * over from LTE to WIFI.
     * <p>
     * The handover notification is sent as a
     * {@link TelephonyManager#EVENT_HANDOVER_VIDEO_FROM_LTE_TO_WIFI}
     * {@link android.telecom.Connection} event, which an {@link android.telecom.InCallService}
     * should use to trigger the display of a user-facing message.
     * @hide
     */
    public static final String KEY_NOTIFY_HANDOVER_VIDEO_FROM_LTE_TO_WIFI_BOOL =
            "notify_handover_video_from_lte_to_wifi_bool";

    
Flag specifying whether the carrier supports downgrading a video call (tx, rx or tx/rx)
directly to an audio call.
@hide
/**
     * Flag specifying whether the carrier supports downgrading a video call (tx, rx or tx/rx)
     * directly to an audio call.
     * @hide
     */
    public static final String KEY_SUPPORT_DOWNGRADE_VT_TO_AUDIO_BOOL =
            "support_downgrade_vt_to_audio_bool";

    
Where there is no preloaded voicemail number on a SIM card, specifies the carrier's default
voicemail number.
When empty string, no default voicemail number is specified.
/**
     * Where there is no preloaded voicemail number on a SIM card, specifies the carrier's default
     * voicemail number.
     * When empty string, no default voicemail number is specified.
     */
    public static final String KEY_DEFAULT_VM_NUMBER_STRING = "default_vm_number_string";

    
Where there is no preloaded voicemail number on a SIM card, specifies the carrier's default
voicemail number for roaming network.
When empty string, no default voicemail number is specified for roaming network.
@hide
/**
     * Where there is no preloaded voicemail number on a SIM card, specifies the carrier's default
     * voicemail number for roaming network.
     * When empty string, no default voicemail number is specified for roaming network.
     * @hide
     */
    public static final String KEY_DEFAULT_VM_NUMBER_ROAMING_STRING =
            "default_vm_number_roaming_string";

    
Flag that specifies to use the user's own phone number as the voicemail number when there is
no pre-loaded voicemail number on the SIM card.
 KEY_DEFAULT_VM_NUMBER_STRING takes precedence over this flag. 

If false, the system default (*86) will be used instead.
/**
     * Flag that specifies to use the user's own phone number as the voicemail number when there is
     * no pre-loaded voicemail number on the SIM card.
     * <p>
     * {@link #KEY_DEFAULT_VM_NUMBER_STRING} takes precedence over this flag.
     * <p>
     * If false, the system default (*86) will be used instead.
     */
    public static final String KEY_CONFIG_TELEPHONY_USE_OWN_NUMBER_FOR_VOICEMAIL_BOOL =
            "config_telephony_use_own_number_for_voicemail_bool";

    
When true, changes to the mobile data enabled switch will not cause the VT registration state to change. That is, turning on or off mobile data will not cause VT to be enabled or disabled. When false, disabling mobile data will cause VT to be de-registered. 
 See also KEY_VILTE_DATA_IS_METERED_BOOL. 
@hide
/**
     * When {@code true}, changes to the mobile data enabled switch will not cause the VT
     * registration state to change.  That is, turning on or off mobile data will not cause VT to be
     * enabled or disabled.
     * When {@code false}, disabling mobile data will cause VT to be de-registered.
     * <p>
     * See also {@link #KEY_VILTE_DATA_IS_METERED_BOOL}.
     * @hide
     */
    public static final String KEY_IGNORE_DATA_ENABLED_CHANGED_FOR_VIDEO_CALLS =
            "ignore_data_enabled_changed_for_video_calls";

    
Flag indicating whether data used for a video call over LTE is metered or not.
 When true, if the device hits the data limit or data is disabled during a ViLTE call, the call will be downgraded to audio-only (or paused if KEY_SUPPORT_PAUSE_IMS_VIDEO_CALLS_BOOL is true). 
@hide
/**
     * Flag indicating whether data used for a video call over LTE is metered or not.
     * <p>
     * When {@code true}, if the device hits the data limit or data is disabled during a ViLTE call,
     * the call will be downgraded to audio-only (or paused if
     * {@link #KEY_SUPPORT_PAUSE_IMS_VIDEO_CALLS_BOOL} is {@code true}).
     *
     * @hide
     */
    public static final String KEY_VILTE_DATA_IS_METERED_BOOL = "vilte_data_is_metered_bool";

    
Flag specifying whether WFC over IMS should be available for carrier: independent of
carrier provisioning. If false: hard disabled. If true: then depends on carrier
provisioning, availability etc.
/**
     * Flag specifying whether WFC over IMS should be available for carrier: independent of
     * carrier provisioning. If false: hard disabled. If true: then depends on carrier
     * provisioning, availability etc.
     */
    public static final String KEY_CARRIER_WFC_IMS_AVAILABLE_BOOL = "carrier_wfc_ims_available_bool";

    
Specifies a map from dialstrings to replacements for roaming network service numbers which
cannot be replaced on the carrier side.

Individual entries have the format:
[dialstring to replace]:[replacement]
/**
     * Specifies a map from dialstrings to replacements for roaming network service numbers which
     * cannot be replaced on the carrier side.
     * <p>
     * Individual entries have the format:
     * [dialstring to replace]:[replacement]
     */
    public static final String KEY_DIAL_STRING_REPLACE_STRING_ARRAY =
            "dial_string_replace_string_array";

    
Flag specifying whether WFC over IMS supports the "wifi only" option.  If false, the wifi
calling settings will not include an option for "wifi only".  If true, the wifi calling
settings will include an option for "wifi only"

By default, it is assumed that WFC supports "wifi only".
/**
     * Flag specifying whether WFC over IMS supports the "wifi only" option.  If false, the wifi
     * calling settings will not include an option for "wifi only".  If true, the wifi calling
     * settings will include an option for "wifi only"
     * <p>
     * By default, it is assumed that WFC supports "wifi only".
     */
    public static final String KEY_CARRIER_WFC_SUPPORTS_WIFI_ONLY_BOOL =
            "carrier_wfc_supports_wifi_only_bool";

    
Default WFC_IMS_MODE for home network   0: WIFI_ONLY
                                        1: CELLULAR_PREFERRED
                                        2: WIFI_PREFERRED
@hide
/**
     * Default WFC_IMS_MODE for home network   0: WIFI_ONLY
     *                                         1: CELLULAR_PREFERRED
     *                                         2: WIFI_PREFERRED
     * @hide
     */
    public static final String KEY_CARRIER_DEFAULT_WFC_IMS_MODE_INT =
            "carrier_default_wfc_ims_mode_int";

    
Default WFC_IMS_MODE for roaming See KEY_CARRIER_DEFAULT_WFC_IMS_MODE_INT for valid values. 
@hide
/**
     * Default WFC_IMS_MODE for roaming
     * See {@link KEY_CARRIER_DEFAULT_WFC_IMS_MODE_INT} for valid values.
     *
     * @hide
     */
    public static final String KEY_CARRIER_DEFAULT_WFC_IMS_ROAMING_MODE_INT =
            "carrier_default_wfc_ims_roaming_mode_int";

    
Default WFC_IMS_enabled: true VoWiFi by default is on
                         false VoWiFi by default is off
@hide
/**
     * Default WFC_IMS_enabled: true VoWiFi by default is on
     *                          false VoWiFi by default is off
     * @hide
     */
    public static final String KEY_CARRIER_DEFAULT_WFC_IMS_ENABLED_BOOL =
            "carrier_default_wfc_ims_enabled_bool";

    
Default WFC_IMS_roaming_enabled: true VoWiFi roaming by default is on
                                 false VoWiFi roaming by default is off
@hide
/**
     * Default WFC_IMS_roaming_enabled: true VoWiFi roaming by default is on
     *                                  false VoWiFi roaming by default is off
     * @hide
     */
    public static final String KEY_CARRIER_DEFAULT_WFC_IMS_ROAMING_ENABLED_BOOL =
            "carrier_default_wfc_ims_roaming_enabled_bool";

    
Flag indicating whether failed calls due to no service should prompt the user to enable WIFI calling. When true, if the user attempts to establish a call when there is no service available, they are connected to WIFI, and WIFI calling is disabled, a different call failure message will be used to encourage the user to enable WIFI calling. 
@hide
/**
     * Flag indicating whether failed calls due to no service should prompt the user to enable
     * WIFI calling.  When {@code true}, if the user attempts to establish a call when there is no
     * service available, they are connected to WIFI, and WIFI calling is disabled, a different
     * call failure message will be used to encourage the user to enable WIFI calling.
     * @hide
     */
    public static final String KEY_CARRIER_PROMOTE_WFC_ON_CALL_FAIL_BOOL =
            "carrier_promote_wfc_on_call_fail_bool";

    
Flag specifying whether provisioning is required for VOLTE. /** Flag specifying whether provisioning is required for VOLTE. */
    public static final String KEY_CARRIER_VOLTE_PROVISIONING_REQUIRED_BOOL
            = "carrier_volte_provisioning_required_bool";

    
Flag specifying if WFC provisioning depends on VoLTE provisioning. false: default value; honor actual WFC provisioning state. true: when VoLTE is not provisioned, treat WFC as not provisioned; when VoLTE is provisioned, honor actual WFC provisioning state. As of now, Verizon is the only carrier enforcing this dependency in their WFC awareness and activation requirements. 
@hide
/**
     * Flag specifying if WFC provisioning depends on VoLTE provisioning.
     *
     * {@code false}: default value; honor actual WFC provisioning state.
     * {@code true}: when VoLTE is not provisioned, treat WFC as not provisioned; when VoLTE is
     *               provisioned, honor actual WFC provisioning state.
     *
     * As of now, Verizon is the only carrier enforcing this dependency in their
     * WFC awareness and activation requirements.
     *
     * @hide
     *  */
    public static final String KEY_CARRIER_VOLTE_OVERRIDE_WFC_PROVISIONING_BOOL
            = "carrier_volte_override_wfc_provisioning_bool";

    
Override the device's configuration for the cellular data service to use for this SIM card.
@hide
/**
     * Override the device's configuration for the cellular data service to use for this SIM card.
     * @hide
     */
    public static final String KEY_CARRIER_DATA_SERVICE_WWAN_PACKAGE_OVERRIDE_STRING
            = "carrier_data_service_wwan_package_override_string";

    
Override the device's configuration for the IWLAN data service to use for this SIM card.
@hide
/**
     * Override the device's configuration for the IWLAN data service to use for this SIM card.
     * @hide
     */
    public static final String KEY_CARRIER_DATA_SERVICE_WLAN_PACKAGE_OVERRIDE_STRING
            = "carrier_data_service_wlan_package_override_string";

    
Flag specifying whether VoLTE TTY is supported. /** Flag specifying whether VoLTE TTY is supported. */
    public static final String KEY_CARRIER_VOLTE_TTY_SUPPORTED_BOOL
            = "carrier_volte_tty_supported_bool";

    
Flag specifying whether IMS service can be turned off. If false then the service will not be
turned-off completely, but individual features can be disabled.
/**
     * Flag specifying whether IMS service can be turned off. If false then the service will not be
     * turned-off completely, but individual features can be disabled.
     */
    public static final String KEY_CARRIER_ALLOW_TURNOFF_IMS_BOOL
            = "carrier_allow_turnoff_ims_bool";

    
Flag specifying whether Generic Bootstrapping Architecture capable SIM is required for IMS.
/**
     * Flag specifying whether Generic Bootstrapping Architecture capable SIM is required for IMS.
     */
    public static final String KEY_CARRIER_IMS_GBA_REQUIRED_BOOL
            = "carrier_ims_gba_required_bool";

    
Flag specifying whether IMS instant lettering is available for the carrier. True if instant lettering is available for the carrier, false otherwise. /**
     * Flag specifying whether IMS instant lettering is available for the carrier.  {@code True} if
     * instant lettering is available for the carrier, {@code false} otherwise.
     */
    public static final String KEY_CARRIER_INSTANT_LETTERING_AVAILABLE_BOOL =
            "carrier_instant_lettering_available_bool";

    /*
     * Flag specifying whether IMS should be the first phone attempted for E911 even if the
     * phone is not in service.
     */
    public static final String KEY_CARRIER_USE_IMS_FIRST_FOR_EMERGENCY_BOOL
            = "carrier_use_ims_first_for_emergency_bool";

    
When IMS instant lettering is available for a carrier (see KEY_CARRIER_INSTANT_LETTERING_AVAILABLE_BOOL), determines the list of characters which may not be contained in messages. Should be specified as a regular expression suitable for use with String.matches(String). /**
     * When IMS instant lettering is available for a carrier (see
     * {@link #KEY_CARRIER_INSTANT_LETTERING_AVAILABLE_BOOL}), determines the list of characters
     * which may not be contained in messages.  Should be specified as a regular expression suitable
     * for use with {@link String#matches(String)}.
     */
    public static final String KEY_CARRIER_INSTANT_LETTERING_INVALID_CHARS_STRING =
            "carrier_instant_lettering_invalid_chars_string";

    
When IMS instant lettering is available for a carrier (see KEY_CARRIER_INSTANT_LETTERING_AVAILABLE_BOOL), determines a list of characters which must be escaped with a backslash '\' character. Should be specified as a string containing the characters to be escaped. For example to escape quote and backslash the string would be a quote and a backslash. /**
     * When IMS instant lettering is available for a carrier (see
     * {@link #KEY_CARRIER_INSTANT_LETTERING_AVAILABLE_BOOL}), determines a list of characters which
     * must be escaped with a backslash '\' character.  Should be specified as a string containing
     * the characters to be escaped.  For example to escape quote and backslash the string would be
     * a quote and a backslash.
     */
    public static final String KEY_CARRIER_INSTANT_LETTERING_ESCAPED_CHARS_STRING =
            "carrier_instant_lettering_escaped_chars_string";

    
When IMS instant lettering is available for a carrier (see KEY_CARRIER_INSTANT_LETTERING_AVAILABLE_BOOL), determines the character encoding which will be used when determining the length of messages. Used in the InCall UI to limit the number of characters the user may type. If empty-string, the instant lettering message size limit will be enforced on a 1:1 basis. That is, each character will count towards the messages size limit as a single bye. If a character encoding is specified, the message size limit will be based on the number of bytes in the message per the specified encoding. /**
     * When IMS instant lettering is available for a carrier (see
     * {@link #KEY_CARRIER_INSTANT_LETTERING_AVAILABLE_BOOL}), determines the character encoding
     * which will be used when determining the length of messages.  Used in the InCall UI to limit
     * the number of characters the user may type.  If empty-string, the instant lettering
     * message size limit will be enforced on a 1:1 basis.  That is, each character will count
     * towards the messages size limit as a single bye.  If a character encoding is specified, the
     * message size limit will be based on the number of bytes in the message per the specified
     * encoding.
     */
    public static final String KEY_CARRIER_INSTANT_LETTERING_ENCODING_STRING =
            "carrier_instant_lettering_encoding_string";

    
When IMS instant lettering is available for a carrier (see KEY_CARRIER_INSTANT_LETTERING_AVAILABLE_BOOL), the length limit for messages. Used in the InCall UI to ensure the user cannot enter more characters than allowed by the carrier. See also KEY_CARRIER_INSTANT_LETTERING_ENCODING_STRING for more information on how the length of the message is calculated. /**
     * When IMS instant lettering is available for a carrier (see
     * {@link #KEY_CARRIER_INSTANT_LETTERING_AVAILABLE_BOOL}), the length limit for messages.  Used
     * in the InCall UI to ensure the user cannot enter more characters than allowed by the carrier.
     * See also {@link #KEY_CARRIER_INSTANT_LETTERING_ENCODING_STRING} for more information on how
     * the length of the message is calculated.
     */
    public static final String KEY_CARRIER_INSTANT_LETTERING_LENGTH_LIMIT_INT =
            "carrier_instant_lettering_length_limit_int";

    
If Voice Radio Technology is RIL_RADIO_TECHNOLOGY_LTE:14 or RIL_RADIO_TECHNOLOGY_UNKNOWN:0
this is the value that should be used instead. A configuration value of
RIL_RADIO_TECHNOLOGY_UNKNOWN:0 means there is no replacement value and that the default
assumption for phone type (GSM) should be used.
/**
     * If Voice Radio Technology is RIL_RADIO_TECHNOLOGY_LTE:14 or RIL_RADIO_TECHNOLOGY_UNKNOWN:0
     * this is the value that should be used instead. A configuration value of
     * RIL_RADIO_TECHNOLOGY_UNKNOWN:0 means there is no replacement value and that the default
     * assumption for phone type (GSM) should be used.
     */
    public static final String KEY_VOLTE_REPLACEMENT_RAT_INT = "volte_replacement_rat_int";

    
The default sim call manager to use when the default dialer doesn't implement one. A sim call
manager can control and route outgoing and incoming phone calls, even if they're placed
using another connection service (PSTN, for example).
/**
     * The default sim call manager to use when the default dialer doesn't implement one. A sim call
     * manager can control and route outgoing and incoming phone calls, even if they're placed
     * using another connection service (PSTN, for example).
     */
    public static final String KEY_DEFAULT_SIM_CALL_MANAGER_STRING = "default_sim_call_manager_string";

    
The default flag specifying whether ETWS/CMAS test setting is forcibly disabled in
Settings->More->Emergency broadcasts menu even though developer options is turned on.
/**
     * The default flag specifying whether ETWS/CMAS test setting is forcibly disabled in
     * Settings->More->Emergency broadcasts menu even though developer options is turned on.
     */
    public static final String KEY_CARRIER_FORCE_DISABLE_ETWS_CMAS_TEST_BOOL =
            "carrier_force_disable_etws_cmas_test_bool";

    
The default flag specifying whether "Turn on Notifications" option will be always shown in
Settings->More->Emergency broadcasts menu regardless developer options is turned on or not.
/**
     * The default flag specifying whether "Turn on Notifications" option will be always shown in
     * Settings->More->Emergency broadcasts menu regardless developer options is turned on or not.
     */
    public static final String KEY_ALWAYS_SHOW_EMERGENCY_ALERT_ONOFF_BOOL =
            "always_show_emergency_alert_onoff_bool";

    
The flag to disable cell broadcast severe alert when extreme alert is disabled.
@hide
/**
     * The flag to disable cell broadcast severe alert when extreme alert is disabled.
     * @hide
     */
    public static final String KEY_DISABLE_SEVERE_WHEN_EXTREME_DISABLED_BOOL =
            "disable_severe_when_extreme_disabled_bool";

    
The message expiration time in milliseconds for duplicate detection purposes.
@hide
/**
     * The message expiration time in milliseconds for duplicate detection purposes.
     * @hide
     */
    public static final String KEY_MESSAGE_EXPIRATION_TIME_LONG =
            "message_expiration_time_long";

    
The data call retry configuration for different types of APN.
@hide
/**
     * The data call retry configuration for different types of APN.
     * @hide
     */
    public static final String KEY_CARRIER_DATA_CALL_RETRY_CONFIG_STRINGS =
            "carrier_data_call_retry_config_strings";

    
Delay in milliseconds between trying APN from the pool
@hide
/**
     * Delay in milliseconds between trying APN from the pool
     * @hide
     */
    public static final String KEY_CARRIER_DATA_CALL_APN_DELAY_DEFAULT_LONG =
            "carrier_data_call_apn_delay_default_long";

    
Faster delay in milliseconds between trying APN from the pool
@hide
/**
     * Faster delay in milliseconds between trying APN from the pool
     * @hide
     */
    public static final String KEY_CARRIER_DATA_CALL_APN_DELAY_FASTER_LONG =
            "carrier_data_call_apn_delay_faster_long";

    
Delay in milliseconds for retrying APN after disconnect
@hide
/**
     * Delay in milliseconds for retrying APN after disconnect
     * @hide
     */
    public static final String KEY_CARRIER_DATA_CALL_APN_RETRY_AFTER_DISCONNECT_LONG =
            "carrier_data_call_apn_retry_after_disconnect_long";

    
Data call setup permanent failure causes by the carrier
/**
     * Data call setup permanent failure causes by the carrier
     */
    public static final String KEY_CARRIER_DATA_CALL_PERMANENT_FAILURE_STRINGS =
            "carrier_data_call_permanent_failure_strings";

    
Default APN types that are metered by the carrier
@hide
/**
     * Default APN types that are metered by the carrier
     * @hide
     */
    public static final String KEY_CARRIER_METERED_APN_TYPES_STRINGS =
            "carrier_metered_apn_types_strings";
    
Default APN types that are roaming-metered by the carrier
@hide
/**
     * Default APN types that are roaming-metered by the carrier
     * @hide
     */
    public static final String KEY_CARRIER_METERED_ROAMING_APN_TYPES_STRINGS =
            "carrier_metered_roaming_apn_types_strings";

    
Default APN types that are metered on IWLAN by the carrier
@hide
/**
     * Default APN types that are metered on IWLAN by the carrier
     * @hide
     */
    public static final String KEY_CARRIER_METERED_IWLAN_APN_TYPES_STRINGS =
            "carrier_metered_iwlan_apn_types_strings";

    
CDMA carrier ERI (Enhanced Roaming Indicator) file name
@hide
/**
     * CDMA carrier ERI (Enhanced Roaming Indicator) file name
     * @hide
     */
    public static final String KEY_CARRIER_ERI_FILE_NAME_STRING =
            "carrier_eri_file_name_string";

    /* The following 3 fields are related to carrier visual voicemail. */

    
The carrier number mobile outgoing (MO) sms messages are sent to.
/**
     * The carrier number mobile outgoing (MO) sms messages are sent to.
     */
    public static final String KEY_VVM_DESTINATION_NUMBER_STRING = "vvm_destination_number_string";

    
The port through which the mobile outgoing (MO) sms messages are sent through.
/**
     * The port through which the mobile outgoing (MO) sms messages are sent through.
     */
    public static final String KEY_VVM_PORT_NUMBER_INT = "vvm_port_number_int";

    
The type of visual voicemail protocol the carrier adheres to. See TelephonyManager for possible values. For example TelephonyManager.VVM_TYPE_OMTP. /**
     * The type of visual voicemail protocol the carrier adheres to. See {@link TelephonyManager}
     * for possible values. For example {@link TelephonyManager#VVM_TYPE_OMTP}.
     */
    public static final String KEY_VVM_TYPE_STRING = "vvm_type_string";

    
Whether cellular data is required to access visual voicemail.
/**
     * Whether cellular data is required to access visual voicemail.
     */
    public static final String KEY_VVM_CELLULAR_DATA_REQUIRED_BOOL =
        "vvm_cellular_data_required_bool";

    
The default OMTP visual voicemail client prefix to use. Defaulted to "//VVM"
/**
     * The default OMTP visual voicemail client prefix to use. Defaulted to "//VVM"
     */
    public static final String KEY_VVM_CLIENT_PREFIX_STRING =
            "vvm_client_prefix_string";

    
Whether to use SSL to connect to the visual voicemail IMAP server. Defaulted to false.
/**
     * Whether to use SSL to connect to the visual voicemail IMAP server. Defaulted to false.
     */
    public static final String KEY_VVM_SSL_ENABLED_BOOL = "vvm_ssl_enabled_bool";

    
A set of capabilities that should not be used even if it is reported by the visual voicemail
IMAP CAPABILITY command.
/**
     * A set of capabilities that should not be used even if it is reported by the visual voicemail
     * IMAP CAPABILITY command.
     */
    public static final String KEY_VVM_DISABLED_CAPABILITIES_STRING_ARRAY =
            "vvm_disabled_capabilities_string_array";

    
Whether legacy mode should be used when the visual voicemail client is disabled.
Legacy mode is a mode that on the carrier side visual voicemail is still activated, but on
the client side all network operations are disabled. SMSs are still monitored so a new
message SYNC SMS will be translated to show a message waiting indicator, like traditional
voicemails.
This is for carriers that does not support VVM deactivation so voicemail can continue to
function without the data cost.
/**
     * Whether legacy mode should be used when the visual voicemail client is disabled.
     *
     * <p>Legacy mode is a mode that on the carrier side visual voicemail is still activated, but on
     * the client side all network operations are disabled. SMSs are still monitored so a new
     * message SYNC SMS will be translated to show a message waiting indicator, like traditional
     * voicemails.
     *
     * <p>This is for carriers that does not support VVM deactivation so voicemail can continue to
     * function without the data cost.
     */
    public static final String KEY_VVM_LEGACY_MODE_ENABLED_BOOL =
            "vvm_legacy_mode_enabled_bool";

    
Whether to prefetch audio data on new voicemail arrival, defaulted to true.
/**
     * Whether to prefetch audio data on new voicemail arrival, defaulted to true.
     */
    public static final String KEY_VVM_PREFETCH_BOOL = "vvm_prefetch_bool";

    
The package name of the carrier's visual voicemail app to ensure that dialer visual voicemail
and carrier visual voicemail are not active at the same time.
Deprecated:
use KEY_CARRIER_VVM_PACKAGE_NAME_STRING_ARRAY./**
     * The package name of the carrier's visual voicemail app to ensure that dialer visual voicemail
     * and carrier visual voicemail are not active at the same time.
     *
     * @deprecated use {@link #KEY_CARRIER_VVM_PACKAGE_NAME_STRING_ARRAY}.
     */
    @Deprecated
    public static final String KEY_CARRIER_VVM_PACKAGE_NAME_STRING = "carrier_vvm_package_name_string";

    
A list of the carrier's visual voicemail app package names to ensure that dialer visual
voicemail and carrier visual voicemail are not active at the same time.
/**
     * A list of the carrier's visual voicemail app package names to ensure that dialer visual
     * voicemail and carrier visual voicemail are not active at the same time.
     */
    public static final String KEY_CARRIER_VVM_PACKAGE_NAME_STRING_ARRAY =
            "carrier_vvm_package_name_string_array";

    
Flag specifying whether ICCID is showed in SIM Status screen, default to false.
/**
     * Flag specifying whether ICCID is showed in SIM Status screen, default to false.
     */
    public static final String KEY_SHOW_ICCID_IN_SIM_STATUS_BOOL = "show_iccid_in_sim_status_bool";

    
Flag specifying whether the SignalStrength is shown in the SIM Status screen. The default value is true. /**
     * Flag specifying whether the {@link android.telephony.SignalStrength} is shown in the SIM
     * Status screen. The default value is true.
     */
    public static final String KEY_SHOW_SIGNAL_STRENGTH_IN_SIM_STATUS_BOOL =
        "show_signal_strength_in_sim_status_bool";

    
Flag specifying whether an additional (client initiated) intent needs to be sent on System
update
/**
     * Flag specifying whether an additional (client initiated) intent needs to be sent on System
     * update
     */
    public static final String KEY_CI_ACTION_ON_SYS_UPDATE_BOOL = "ci_action_on_sys_update_bool";

    
Intent to be sent for the additional action on System update
/**
     * Intent to be sent for the additional action on System update
     */
    public static final String KEY_CI_ACTION_ON_SYS_UPDATE_INTENT_STRING =
            "ci_action_on_sys_update_intent_string";

    
Extra to be included in the intent sent for additional action on System update
/**
     * Extra to be included in the intent sent for additional action on System update
     */
    public static final String KEY_CI_ACTION_ON_SYS_UPDATE_EXTRA_STRING =
            "ci_action_on_sys_update_extra_string";

    
Value of extra included in intent sent for additional action on System update
/**
     * Value of extra included in intent sent for additional action on System update
     */
    public static final String KEY_CI_ACTION_ON_SYS_UPDATE_EXTRA_VAL_STRING =
            "ci_action_on_sys_update_extra_val_string";

    
Specifies the amount of gap to be added in millis between postdial DTMF tones. When a
non-zero value is specified, the UE shall wait for the specified amount of time before it
sends out successive DTMF tones on the network.
/**
     * Specifies the amount of gap to be added in millis between postdial DTMF tones. When a
     * non-zero value is specified, the UE shall wait for the specified amount of time before it
     * sends out successive DTMF tones on the network.
     */
    public static final String KEY_GSM_DTMF_TONE_DELAY_INT = "gsm_dtmf_tone_delay_int";

    
Specifies the amount of gap to be added in millis between DTMF tones. When a non-zero value
is specified, the UE shall wait for the specified amount of time before it sends out
successive DTMF tones on the network.
/**
     * Specifies the amount of gap to be added in millis between DTMF tones. When a non-zero value
     * is specified, the UE shall wait for the specified amount of time before it sends out
     * successive DTMF tones on the network.
     */
    public static final String KEY_IMS_DTMF_TONE_DELAY_INT = "ims_dtmf_tone_delay_int";

    
Specifies the amount of gap to be added in millis between postdial DTMF tones. When a
non-zero value is specified, the UE shall wait for the specified amount of time before it
sends out successive DTMF tones on the network.
/**
     * Specifies the amount of gap to be added in millis between postdial DTMF tones. When a
     * non-zero value is specified, the UE shall wait for the specified amount of time before it
     * sends out successive DTMF tones on the network.
     */
    public static final String KEY_CDMA_DTMF_TONE_DELAY_INT = "cdma_dtmf_tone_delay_int";

    
Some carriers will send call forwarding responses for voicemail in a format that is not 3gpp compliant, which causes issues during parsing. This causes the number.number to contain non-numerical characters instead of a number. If true, we will detect the non-numerical characters and replace them with "Voicemail". 
@hide
/**
     * Some carriers will send call forwarding responses for voicemail in a format that is not 3gpp
     * compliant, which causes issues during parsing. This causes the
     * {@link com.android.internal.telephony.CallForwardInfo#number} to contain non-numerical
     * characters instead of a number.
     *
     * If true, we will detect the non-numerical characters and replace them with "Voicemail".
     * @hide
     */
    public static final String KEY_CALL_FORWARDING_MAP_NON_NUMBER_TO_VOICEMAIL_BOOL =
            "call_forwarding_map_non_number_to_voicemail_bool";

    
Determines whether conference calls are supported by a carrier. When true, conference calling is supported, false otherwise. /**
     * Determines whether conference calls are supported by a carrier.  When {@code true},
     * conference calling is supported, {@code false otherwise}.
     */
    public static final String KEY_SUPPORT_CONFERENCE_CALL_BOOL = "support_conference_call_bool";

    
Determines whether a maximum size limit for IMS conference calls is enforced on the device. When true, IMS conference calls will be limited to at most KEY_IMS_CONFERENCE_SIZE_LIMIT_INT participants. When false, no attempt is made to limit the number of participants in a conference (the carrier will raise an error when an attempt is made to merge too many participants into a conference). /**
     * Determines whether a maximum size limit for IMS conference calls is enforced on the device.
     * When {@code true}, IMS conference calls will be limited to at most
     * {@link #KEY_IMS_CONFERENCE_SIZE_LIMIT_INT} participants.  When {@code false}, no attempt is made
     * to limit the number of participants in a conference (the carrier will raise an error when an
     * attempt is made to merge too many participants into a conference).
     */
    public static final String KEY_IS_IMS_CONFERENCE_SIZE_ENFORCED_BOOL =
            "is_ims_conference_size_enforced_bool";

    
Determines the maximum number of participants the carrier supports for a conference call. This number is exclusive of the current device. A conference between 3 devices, for example, would have a size limit of 2 participants. Enforced when KEY_IS_IMS_CONFERENCE_SIZE_ENFORCED_BOOL is true. /**
     * Determines the maximum number of participants the carrier supports for a conference call.
     * This number is exclusive of the current device.  A conference between 3 devices, for example,
     * would have a size limit of 2 participants.
     * Enforced when {@link #KEY_IS_IMS_CONFERENCE_SIZE_ENFORCED_BOOL} is {@code true}.
     */
    public static final String KEY_IMS_CONFERENCE_SIZE_LIMIT_INT = "ims_conference_size_limit_int";

    
Determines whether manage IMS conference calls is supported by a carrier. When true, manage IMS conference call is supported, false otherwise. 
@hide
/**
     * Determines whether manage IMS conference calls is supported by a carrier.  When {@code true},
     * manage IMS conference call is supported, {@code false otherwise}.
     * @hide
     */
    public static final String KEY_SUPPORT_MANAGE_IMS_CONFERENCE_CALL_BOOL =
            "support_manage_ims_conference_call_bool";

    
Determines whether High Definition audio property is displayed in the dialer UI. If false, remove the HD audio property from the connection so that HD audio related UI is not displayed. If true, keep HD audio property as it is configured. /**
     * Determines whether High Definition audio property is displayed in the dialer UI.
     * If {@code false}, remove the HD audio property from the connection so that HD audio related
     * UI is not displayed. If {@code true}, keep HD audio property as it is configured.
     */
    public static final String KEY_DISPLAY_HD_AUDIO_PROPERTY_BOOL =
            "display_hd_audio_property_bool";

    
Determines whether IMS conference calls are supported by a carrier. When true, IMS conference calling is supported, false otherwise. 
@hide
/**
     * Determines whether IMS conference calls are supported by a carrier.  When {@code true},
     * IMS conference calling is supported, {@code false} otherwise.
     * @hide
     */
    public static final String KEY_SUPPORT_IMS_CONFERENCE_CALL_BOOL =
            "support_ims_conference_call_bool";

    
Determines whether video conference calls are supported by a carrier. When true, video calls can be merged into conference calls, false otherwiwse. 
 Note: even if video conference calls are not supported, audio calls may be merged into a conference if KEY_SUPPORT_CONFERENCE_CALL_BOOL is true. 
@hide
/**
     * Determines whether video conference calls are supported by a carrier.  When {@code true},
     * video calls can be merged into conference calls, {@code false} otherwiwse.
     * <p>
     * Note: even if video conference calls are not supported, audio calls may be merged into a
     * conference if {@link #KEY_SUPPORT_CONFERENCE_CALL_BOOL} is {@code true}.
     * @hide
     */
    public static final String KEY_SUPPORT_VIDEO_CONFERENCE_CALL_BOOL =
            "support_video_conference_call_bool";

    
Determine whether user can toggle Enhanced 4G LTE Mode in Settings.
/**
     * Determine whether user can toggle Enhanced 4G LTE Mode in Settings.
     */
    public static final String KEY_EDITABLE_ENHANCED_4G_LTE_BOOL = "editable_enhanced_4g_lte_bool";

    
Determines whether the Enhanced 4G LTE toggle will be shown in the settings. When this option is true, the toggle will be hidden regardless of whether the device and carrier supports 4G LTE or not. /**
     * Determines whether the Enhanced 4G LTE toggle will be shown in the settings. When this
     * option is {@code true}, the toggle will be hidden regardless of whether the device and
     * carrier supports 4G LTE or not.
     */
    public static final String KEY_HIDE_ENHANCED_4G_LTE_BOOL = "hide_enhanced_4g_lte_bool";

    
Default Enhanced 4G LTE mode enabled. When this is true, Enhanced 4G LTE mode by default is on, otherwise if false, Enhanced 4G LTE mode by default is off. 
@hide
/**
     * Default Enhanced 4G LTE mode enabled. When this is {@code true}, Enhanced 4G LTE mode by
     * default is on, otherwise if {@code false}, Enhanced 4G LTE mode by default is off.
     * @hide
     */
    public static final String KEY_ENHANCED_4G_LTE_ON_BY_DEFAULT_BOOL =
            "enhanced_4g_lte_on_by_default_bool";

    
Determine whether IMS apn can be shown.
/**
     * Determine whether IMS apn can be shown.
     */
    public static final String KEY_HIDE_IMS_APN_BOOL = "hide_ims_apn_bool";

    
Determine whether preferred network type can be shown.
/**
     * Determine whether preferred network type can be shown.
     */
    public static final String KEY_HIDE_PREFERRED_NETWORK_TYPE_BOOL = "hide_preferred_network_type_bool";

    
String array for package names that need to be enabled for this carrier.
If user has explicitly disabled some packages in the list, won't re-enable.
Other carrier specific apps which are not in this list may be disabled for current carrier,
and only be re-enabled when this config for another carrier includes it.
@hide
/**
     * String array for package names that need to be enabled for this carrier.
     * If user has explicitly disabled some packages in the list, won't re-enable.
     * Other carrier specific apps which are not in this list may be disabled for current carrier,
     * and only be re-enabled when this config for another carrier includes it.
     *
     * @hide
     */
    public static final String KEY_ENABLE_APPS_STRING_ARRAY = "enable_apps_string_array";

    
Determine whether user can switch Wi-Fi preferred or Cellular preferred in calling preference.
Some operators support Wi-Fi Calling only, not VoLTE.
They don't need "Cellular preferred" option.
In this case, set uneditalbe attribute for preferred preference.
@hide
/**
     * Determine whether user can switch Wi-Fi preferred or Cellular preferred in calling preference.
     * Some operators support Wi-Fi Calling only, not VoLTE.
     * They don't need "Cellular preferred" option.
     * In this case, set uneditalbe attribute for preferred preference.
     * @hide
     */
    public static final String KEY_EDITABLE_WFC_MODE_BOOL = "editable_wfc_mode_bool";

     
Flag to indicate if Wi-Fi needs to be disabled in ECBM
@hide
/**
      * Flag to indicate if Wi-Fi needs to be disabled in ECBM
      * @hide
      **/
     public static final String
              KEY_CONFIG_WIFI_DISABLE_IN_ECBM = "config_wifi_disable_in_ecbm";

    
List operator-specific error codes and indices of corresponding error strings in
wfcOperatorErrorAlertMessages and wfcOperatorErrorNotificationMessages.
Example: "REG09|0" specifies error code "REG09" and index "0". This index will be
used to find alert and notification messages in wfcOperatorErrorAlertMessages and
wfcOperatorErrorNotificationMessages.
@hide
/**
     * List operator-specific error codes and indices of corresponding error strings in
     * wfcOperatorErrorAlertMessages and wfcOperatorErrorNotificationMessages.
     *
     * Example: "REG09|0" specifies error code "REG09" and index "0". This index will be
     * used to find alert and notification messages in wfcOperatorErrorAlertMessages and
     * wfcOperatorErrorNotificationMessages.
     *
     * @hide
     */
    public static final String KEY_WFC_OPERATOR_ERROR_CODES_STRING_ARRAY =
            "wfc_operator_error_codes_string_array";

    
Indexes of SPN format strings in wfcSpnFormats and wfcDataSpnFormats.
@hide
/**
     * Indexes of SPN format strings in wfcSpnFormats and wfcDataSpnFormats.
     * @hide
     */
    public static final String KEY_WFC_SPN_FORMAT_IDX_INT = "wfc_spn_format_idx_int";
    
@hide
/** @hide */
    public static final String KEY_WFC_DATA_SPN_FORMAT_IDX_INT = "wfc_data_spn_format_idx_int";

    
The Component Name of the activity that can setup the emergency addrees for WiFi Calling
as per carrier requirement.
@hide
/**
     * The Component Name of the activity that can setup the emergency addrees for WiFi Calling
     * as per carrier requirement.
     * @hide
     */
     public static final String KEY_WFC_EMERGENCY_ADDRESS_CARRIER_APP_STRING =
            "wfc_emergency_address_carrier_app_string";

    
Unconditionally override the carrier name string using #KEY_CARRIER_NAME_STRING.
If true, then the carrier name string will be #KEY_CARRIER_NAME_STRING, unconditionally.
If false, then the override will be performed conditionally and the
#KEY_CARRIER_NAME_STRING will have the lowest-precedence; it will only be used in the event
that the name string would otherwise be empty, allowing it to serve as a last-resort. If
used, this value functions in place of the SPN on any/all ICC records for the corresponding
subscription.
/**
     * Unconditionally override the carrier name string using #KEY_CARRIER_NAME_STRING.
     *
     * If true, then the carrier name string will be #KEY_CARRIER_NAME_STRING, unconditionally.
     *
     * <p>If false, then the override will be performed conditionally and the
     * #KEY_CARRIER_NAME_STRING will have the lowest-precedence; it will only be used in the event
     * that the name string would otherwise be empty, allowing it to serve as a last-resort. If
     * used, this value functions in place of the SPN on any/all ICC records for the corresponding
     * subscription.
     */
    public static final String KEY_CARRIER_NAME_OVERRIDE_BOOL = "carrier_name_override_bool";

    
String to identify carrier name in CarrierConfig app. This string overrides SPN if
#KEY_CARRIER_NAME_OVERRIDE_BOOL is true; otherwise, it will be used if its value is provided
and SPN is unavailable
/**
     * String to identify carrier name in CarrierConfig app. This string overrides SPN if
     * #KEY_CARRIER_NAME_OVERRIDE_BOOL is true; otherwise, it will be used if its value is provided
     * and SPN is unavailable
     */
    public static final String KEY_CARRIER_NAME_STRING = "carrier_name_string";

    
Override the registered PLMN name using #KEY_CDMA_HOME_REGISTERED_PLMN_NAME_STRING.
If true, then the registered PLMN name (only for CDMA/CDMA-LTE and only when not roaming)
will be #KEY_CDMA_HOME_REGISTERED_PLMN_NAME_STRING. If false, or if phone type is not
CDMA/CDMA-LTE or if roaming, then #KEY_CDMA_HOME_REGISTERED_PLMN_NAME_STRING will be ignored.
@hide
/**
     * Override the registered PLMN name using #KEY_CDMA_HOME_REGISTERED_PLMN_NAME_STRING.
     *
     * If true, then the registered PLMN name (only for CDMA/CDMA-LTE and only when not roaming)
     * will be #KEY_CDMA_HOME_REGISTERED_PLMN_NAME_STRING. If false, or if phone type is not
     * CDMA/CDMA-LTE or if roaming, then #KEY_CDMA_HOME_REGISTERED_PLMN_NAME_STRING will be ignored.
     * @hide
     */
    public static final String KEY_CDMA_HOME_REGISTERED_PLMN_NAME_OVERRIDE_BOOL =
            "cdma_home_registered_plmn_name_override_bool";

    
String to identify registered PLMN name in CarrierConfig app. This string overrides
registered PLMN name if #KEY_CDMA_HOME_REGISTERED_PLMN_NAME_OVERRIDE_BOOL is true, phone type
is CDMA/CDMA-LTE and device is not in roaming state; otherwise, it will be ignored.
@hide
/**
     * String to identify registered PLMN name in CarrierConfig app. This string overrides
     * registered PLMN name if #KEY_CDMA_HOME_REGISTERED_PLMN_NAME_OVERRIDE_BOOL is true, phone type
     * is CDMA/CDMA-LTE and device is not in roaming state; otherwise, it will be ignored.
     * @hide
     */
    public static final String KEY_CDMA_HOME_REGISTERED_PLMN_NAME_STRING =
            "cdma_home_registered_plmn_name_string";

    
If this is true, the SIM card (through Customer Service Profile EF file) will be able to
prevent manual operator selection. If false, this SIM setting will be ignored and manual
operator selection will always be available. See CPHS4_2.WW6, CPHS B.4.7.1 for more
information
/**
     * If this is true, the SIM card (through Customer Service Profile EF file) will be able to
     * prevent manual operator selection. If false, this SIM setting will be ignored and manual
     * operator selection will always be available. See CPHS4_2.WW6, CPHS B.4.7.1 for more
     * information
     */
    public static final String KEY_CSP_ENABLED_BOOL = "csp_enabled_bool";

    
Allow user to add APNs
/**
     * Allow user to add APNs
     */
    public static final String KEY_ALLOW_ADDING_APNS_BOOL = "allow_adding_apns_bool";

    
APN types that user is not allowed to modify
@hide
/**
     * APN types that user is not allowed to modify
     * @hide
     */
    public static final String KEY_READ_ONLY_APN_TYPES_STRING_ARRAY =
            "read_only_apn_types_string_array";

    
APN fields that user is not allowed to modify
@hide
/**
     * APN fields that user is not allowed to modify
     * @hide
     */
    public static final String KEY_READ_ONLY_APN_FIELDS_STRING_ARRAY =
            "read_only_apn_fields_string_array";

    
Boolean indicating if intent for emergency call state changes should be broadcast
@hide
/**
     * Boolean indicating if intent for emergency call state changes should be broadcast
     * @hide
     */
    public static final String KEY_BROADCAST_EMERGENCY_CALL_STATE_CHANGES_BOOL =
            "broadcast_emergency_call_state_changes_bool";

    
Indicates whether STK LAUNCH_BROWSER command is disabled. If true, then the browser will not be launched on UI for the LAUNCH_BROWSER STK command. 
@hide
/**
      * Indicates whether STK LAUNCH_BROWSER command is disabled.
      * If {@code true}, then the browser will not be launched
      * on UI for the LAUNCH_BROWSER STK command.
      * @hide
      */
    public static final String KEY_STK_DISABLE_LAUNCH_BROWSER_BOOL =
            "stk_disable_launch_browser_bool";

    
Boolean indicating if show data RAT icon on status bar even when data is disabled
@hide
/**
     * Boolean indicating if show data RAT icon on status bar even when data is disabled
     * @hide
     */
    public static final String KEY_ALWAYS_SHOW_DATA_RAT_ICON_BOOL =
            "always_show_data_rat_icon_bool";

    
Boolean to decide whether to show precise call failed cause to user
@hide
/**
     * Boolean to decide whether to show precise call failed cause to user
     * @hide
     */
    public static final String KEY_SHOW_PRECISE_FAILED_CAUSE_BOOL =
            "show_precise_failed_cause_bool";

    // These variables are used by the MMS service and exposed through another API, {@link
    // SmsManager}. The variable names and string values are copied from there.
    public static final String KEY_MMS_ALIAS_ENABLED_BOOL = "aliasEnabled";
    public static final String KEY_MMS_ALLOW_ATTACH_AUDIO_BOOL = "allowAttachAudio";
    public static final String KEY_MMS_APPEND_TRANSACTION_ID_BOOL = "enabledTransID";
    public static final String KEY_MMS_GROUP_MMS_ENABLED_BOOL = "enableGroupMms";
    public static final String KEY_MMS_MMS_DELIVERY_REPORT_ENABLED_BOOL = "enableMMSDeliveryReports";
    public static final String KEY_MMS_MMS_ENABLED_BOOL = "enabledMMS";
    public static final String KEY_MMS_MMS_READ_REPORT_ENABLED_BOOL = "enableMMSReadReports";
    public static final String KEY_MMS_MULTIPART_SMS_ENABLED_BOOL = "enableMultipartSMS";
    public static final String KEY_MMS_NOTIFY_WAP_MMSC_ENABLED_BOOL = "enabledNotifyWapMMSC";
    public static final String KEY_MMS_SEND_MULTIPART_SMS_AS_SEPARATE_MESSAGES_BOOL = "sendMultipartSmsAsSeparateMessages";
    public static final String KEY_MMS_SHOW_CELL_BROADCAST_APP_LINKS_BOOL = "config_cellBroadcastAppLinks";
    public static final String KEY_MMS_SMS_DELIVERY_REPORT_ENABLED_BOOL = "enableSMSDeliveryReports";
    public static final String KEY_MMS_SUPPORT_HTTP_CHARSET_HEADER_BOOL = "supportHttpCharsetHeader";
    public static final String KEY_MMS_SUPPORT_MMS_CONTENT_DISPOSITION_BOOL = "supportMmsContentDisposition";
    public static final String KEY_MMS_ALIAS_MAX_CHARS_INT = "aliasMaxChars";
    public static final String KEY_MMS_ALIAS_MIN_CHARS_INT = "aliasMinChars";
    public static final String KEY_MMS_HTTP_SOCKET_TIMEOUT_INT = "httpSocketTimeout";
    public static final String KEY_MMS_MAX_IMAGE_HEIGHT_INT = "maxImageHeight";
    public static final String KEY_MMS_MAX_IMAGE_WIDTH_INT = "maxImageWidth";
    public static final String KEY_MMS_MAX_MESSAGE_SIZE_INT = "maxMessageSize";
    public static final String KEY_MMS_MESSAGE_TEXT_MAX_SIZE_INT = "maxMessageTextSize";
    public static final String KEY_MMS_RECIPIENT_LIMIT_INT = "recipientLimit";
    public static final String KEY_MMS_SMS_TO_MMS_TEXT_LENGTH_THRESHOLD_INT = "smsToMmsTextLengthThreshold";
    public static final String KEY_MMS_SMS_TO_MMS_TEXT_THRESHOLD_INT = "smsToMmsTextThreshold";
    public static final String KEY_MMS_SUBJECT_MAX_LENGTH_INT = "maxSubjectLength";
    public static final String KEY_MMS_EMAIL_GATEWAY_NUMBER_STRING = "emailGatewayNumber";
    public static final String KEY_MMS_HTTP_PARAMS_STRING = "httpParams";
    public static final String KEY_MMS_NAI_SUFFIX_STRING = "naiSuffix";
    public static final String KEY_MMS_UA_PROF_TAG_NAME_STRING = "uaProfTagName";
    public static final String KEY_MMS_UA_PROF_URL_STRING = "uaProfUrl";
    public static final String KEY_MMS_USER_AGENT_STRING = "userAgent";
    
@hide
/** @hide */
    public static final String KEY_MMS_CLOSE_CONNECTION_BOOL = "mmsCloseConnection";

    
If carriers require differentiate un-provisioned status: cold sim or out of credit sim
a package name and activity name can be provided to launch a supported carrier application
that check the sim provisioning status
The first element is the package name and the second element is the activity name
of the provisioning app
example:
com.google.android.carrierPackageName
com.google.android.carrierPackageName.CarrierActivityName
The ComponentName of the carrier activity that can setup the device and activate with the
network as part of the Setup Wizard flow.
@hide
/**
     * If carriers require differentiate un-provisioned status: cold sim or out of credit sim
     * a package name and activity name can be provided to launch a supported carrier application
     * that check the sim provisioning status
     * The first element is the package name and the second element is the activity name
     * of the provisioning app
     * example:
     * <item>com.google.android.carrierPackageName</item>
     * <item>com.google.android.carrierPackageName.CarrierActivityName</item>
     * The ComponentName of the carrier activity that can setup the device and activate with the
     * network as part of the Setup Wizard flow.
     * @hide
     */
     public static final String KEY_CARRIER_SETUP_APP_STRING = "carrier_setup_app_string";

    
Defines carrier-specific actions which act upon com.android.internal.telephony.CARRIER_SIGNAL_REDIRECTED, used for customization of the default carrier app Format: "CARRIER_ACTION_IDX, ..." Where CARRIER_ACTION_IDX is an integer defined in CarrierActionUtils Example: 
disable_metered_apns 
@hide
/**
     * Defines carrier-specific actions which act upon
     * com.android.internal.telephony.CARRIER_SIGNAL_REDIRECTED, used for customization of the
     * default carrier app
     * Format: "CARRIER_ACTION_IDX, ..."
     * Where {@code CARRIER_ACTION_IDX} is an integer defined in
     * {@link com.android.carrierdefaultapp.CarrierActionUtils CarrierActionUtils}
     * Example:
     * {@link com.android.carrierdefaultapp.CarrierActionUtils#CARRIER_ACTION_DISABLE_METERED_APNS
     * disable_metered_apns}
     * @hide
     */
    public static final String KEY_CARRIER_DEFAULT_ACTIONS_ON_REDIRECTION_STRING_ARRAY =
            "carrier_default_actions_on_redirection_string_array";

    
Defines carrier-specific actions which act upon com.android.internal.telephony.CARRIER_SIGNAL_REQUEST_NETWORK_FAILED and configured signal args: apnType, errorCode used for customization of the default carrier app Format: { "APN_1, ERROR_CODE_1 : CARRIER_ACTION_IDX_1, CARRIER_ACTION_IDX_2...", "APN_1, ERROR_CODE_2 : CARRIER_ACTION_IDX_1 " } Where APN_1 is a string defined in PhoneConstants Example: "default" ERROR_CODE_1 is an integer defined in DcFailure Example: MISSING_UNKNOWN_APN.MISSING_UNKNOWN_APN CARRIER_ACTION_IDX_1 is an integer defined in CarrierActionUtils Example: CarrierActionUtils.CARRIER_ACTION_DISABLE_METERED_APNS 
@hide
/**
     * Defines carrier-specific actions which act upon
     * com.android.internal.telephony.CARRIER_SIGNAL_REQUEST_NETWORK_FAILED
     * and configured signal args:
     * {@link com.android.internal.telephony.TelephonyIntents#EXTRA_APN_TYPE_KEY apnType},
     * {@link com.android.internal.telephony.TelephonyIntents#EXTRA_ERROR_CODE_KEY errorCode}
     * used for customization of the default carrier app
     * Format:
     * {
     *     "APN_1, ERROR_CODE_1 : CARRIER_ACTION_IDX_1, CARRIER_ACTION_IDX_2...",
     *     "APN_1, ERROR_CODE_2 : CARRIER_ACTION_IDX_1 "
     * }
     * Where {@code APN_1} is a string defined in
     * {@link com.android.internal.telephony.PhoneConstants PhoneConstants}
     * Example: "default"
     *
     * {@code ERROR_CODE_1} is an integer defined in
     * {@link com.android.internal.telephony.dataconnection.DcFailCause DcFailure}
     * Example:
     * {@link com.android.internal.telephony.dataconnection.DcFailCause#MISSING_UNKNOWN_APN}
     *
     * {@code CARRIER_ACTION_IDX_1} is an integer defined in
     * {@link com.android.carrierdefaultapp.CarrierActionUtils CarrierActionUtils}
     * Example:
     * {@link com.android.carrierdefaultapp.CarrierActionUtils#CARRIER_ACTION_DISABLE_METERED_APNS}
     * @hide
     */
    public static final String KEY_CARRIER_DEFAULT_ACTIONS_ON_DCFAILURE_STRING_ARRAY =
            "carrier_default_actions_on_dcfailure_string_array";

    
Defines carrier-specific actions which act upon com.android.internal.telephony.CARRIER_SIGNAL_RESET, used for customization of the default carrier app Format: "CARRIER_ACTION_IDX, ..." Where CARRIER_ACTION_IDX is an integer defined in CarrierActionUtils Example: clear all notifications on reset 
@hide
/**
     * Defines carrier-specific actions which act upon
     * com.android.internal.telephony.CARRIER_SIGNAL_RESET, used for customization of the
     * default carrier app
     * Format: "CARRIER_ACTION_IDX, ..."
     * Where {@code CARRIER_ACTION_IDX} is an integer defined in
     * {@link com.android.carrierdefaultapp.CarrierActionUtils CarrierActionUtils}
     * Example:
     * {@link com.android.carrierdefaultapp.CarrierActionUtils
     * #CARRIER_ACTION_CANCEL_ALL_NOTIFICATIONS clear all notifications on reset}
     * @hide
     */
    public static final String KEY_CARRIER_DEFAULT_ACTIONS_ON_RESET =
            "carrier_default_actions_on_reset_string_array";

    
Defines carrier-specific actions which act upon com.android.internal.telephony.CARRIER_SIGNAL_DEFAULT_NETWORK_AVAILABLE, used for customization of the default carrier app Format: { "true : CARRIER_ACTION_IDX_1", "false: CARRIER_ACTION_IDX_2" } Where true is a boolean indicates default network available/unavailable Where CARRIER_ACTION_IDX is an integer defined in CarrierActionUtils Example: enable the app as the default URL handler 
@hide
/**
     * Defines carrier-specific actions which act upon
     * com.android.internal.telephony.CARRIER_SIGNAL_DEFAULT_NETWORK_AVAILABLE,
     * used for customization of the default carrier app
     * Format:
     * {
     *     "true : CARRIER_ACTION_IDX_1",
     *     "false: CARRIER_ACTION_IDX_2"
     * }
     * Where {@code true} is a boolean indicates default network available/unavailable
     * Where {@code CARRIER_ACTION_IDX} is an integer defined in
     * {@link com.android.carrierdefaultapp.CarrierActionUtils CarrierActionUtils}
     * Example:
     * {@link com.android.carrierdefaultapp.CarrierActionUtils
     * #CARRIER_ACTION_ENABLE_DEFAULT_URL_HANDLER enable the app as the default URL handler}
     * @hide
     */
    public static final String KEY_CARRIER_DEFAULT_ACTIONS_ON_DEFAULT_NETWORK_AVAILABLE =
            "carrier_default_actions_on_default_network_available_string_array";
    
Defines a list of acceptable redirection url for default carrier app
@hides
/**
     * Defines a list of acceptable redirection url for default carrier app
     * @hides
     */
    public static final String KEY_CARRIER_DEFAULT_REDIRECTION_URL_STRING_ARRAY =
            "carrier_default_redirection_url_string_array";

    
Each config includes the componentName of the carrier app, followed by a list of interesting
signals(declared in the manifest) which could wake up the app.
See Also:

Example:
com.google.android.carrierAPK/.CarrierSignalReceiverA:
com.android.internal.telephony.CARRIER_SIGNAL_REDIRECTED,
com.android.internal.telephony.CARRIER_SIGNAL_PCO_VALUE

com.google.android.carrierAPK/.CarrierSignalReceiverB:
com.android.internal.telephony.CARRIER_SIGNAL_PCO_VALUE
@hide
/**
     * Each config includes the componentName of the carrier app, followed by a list of interesting
     * signals(declared in the manifest) which could wake up the app.
     * @see com.android.internal.telephony.TelephonyIntents
     * Example:
     * <item>com.google.android.carrierAPK/.CarrierSignalReceiverA:
     * com.android.internal.telephony.CARRIER_SIGNAL_REDIRECTED,
     * com.android.internal.telephony.CARRIER_SIGNAL_PCO_VALUE
     * </item>
     * <item>com.google.android.carrierAPK/.CarrierSignalReceiverB:
     * com.android.internal.telephony.CARRIER_SIGNAL_PCO_VALUE
     * </item>
     * @hide
     */
    public static final String KEY_CARRIER_APP_WAKE_SIGNAL_CONFIG_STRING_ARRAY =
            "carrier_app_wake_signal_config";

    
Each config includes the componentName of the carrier app, followed by a list of interesting
signals for the app during run-time. The list of signals(intents) are targeting on run-time
broadcast receivers only, aiming to avoid unnecessary wake-ups and should not be declared in
the app's manifest.
See Also:

Example:
com.google.android.carrierAPK/.CarrierSignalReceiverA:
com.android.internal.telephony.CARRIER_SIGNAL_REQUEST_NETWORK_FAILED,
com.android.internal.telephony.CARRIER_SIGNAL_PCO_VALUE

com.google.android.carrierAPK/.CarrierSignalReceiverB:
com.android.internal.telephony.CARRIER_SIGNAL_REQUEST_NETWORK_FAILED
@hide
/**
     * Each config includes the componentName of the carrier app, followed by a list of interesting
     * signals for the app during run-time. The list of signals(intents) are targeting on run-time
     * broadcast receivers only, aiming to avoid unnecessary wake-ups and should not be declared in
     * the app's manifest.
     * @see com.android.internal.telephony.TelephonyIntents
     * Example:
     * <item>com.google.android.carrierAPK/.CarrierSignalReceiverA:
     * com.android.internal.telephony.CARRIER_SIGNAL_REQUEST_NETWORK_FAILED,
     * com.android.internal.telephony.CARRIER_SIGNAL_PCO_VALUE
     * </item>
     * <item>com.google.android.carrierAPK/.CarrierSignalReceiverB:
     * com.android.internal.telephony.CARRIER_SIGNAL_REQUEST_NETWORK_FAILED
     * </item>
     * @hide
     */
    public static final String KEY_CARRIER_APP_NO_WAKE_SIGNAL_CONFIG_STRING_ARRAY =
            "carrier_app_no_wake_signal_config";

    
Default value for DATA_ROAMING.DATA_ROAMING 
@hide
/**
     * Default value for {@link Settings.Global#DATA_ROAMING}
     * @hide
     */
    public static final String KEY_CARRIER_DEFAULT_DATA_ROAMING_ENABLED_BOOL =
            "carrier_default_data_roaming_enabled_bool";

    
Determines whether the carrier supports making non-emergency phone calls while the phone is in emergency callback mode. Default value is true, meaning that non-emergency calls are allowed in emergency callback mode. /**
     * Determines whether the carrier supports making non-emergency phone calls while the phone is
     * in emergency callback mode.  Default value is {@code true}, meaning that non-emergency calls
     * are allowed in emergency callback mode.
     */
    public static final String KEY_ALLOW_NON_EMERGENCY_CALLS_IN_ECM_BOOL =
            "allow_non_emergency_calls_in_ecm_bool";

    
Flag indicating whether to allow carrier video calls to emergency numbers. When true, video calls to emergency numbers will be allowed. When false, video calls to emergency numbers will be initiated as audio-only calls instead. /**
     * Flag indicating whether to allow carrier video calls to emergency numbers.
     * When {@code true}, video calls to emergency numbers will be allowed.  When {@code false},
     * video calls to emergency numbers will be initiated as audio-only calls instead.
     */
    public static final String KEY_ALLOW_EMERGENCY_VIDEO_CALLS_BOOL =
            "allow_emergency_video_calls_bool";

    
Flag indicating whether the carrier supports RCS presence indication for video calls. When true, the carrier supports RCS presence indication for video calls. When presence is supported, the device should use the DataColumns.CARRIER_PRESENCE bit mask and set the DataColumns.CARRIER_PRESENCE_VT_CAPABLE bit to indicate whether each contact supports video calling. The UI is made aware that presence is enabled via PhoneAccount.CAPABILITY_VIDEO_CALLING_RELIES_ON_PRESENCE and can choose to hide or show the video calling icon based on whether a contact supports video. /**
     * Flag indicating whether the carrier supports RCS presence indication for video calls.  When
     * {@code true}, the carrier supports RCS presence indication for video calls.  When presence
     * is supported, the device should use the
     * {@link android.provider.ContactsContract.Data#CARRIER_PRESENCE} bit mask and set the
     * {@link android.provider.ContactsContract.Data#CARRIER_PRESENCE_VT_CAPABLE} bit to indicate
     * whether each contact supports video calling.  The UI is made aware that presence is enabled
     * via {@link android.telecom.PhoneAccount#CAPABILITY_VIDEO_CALLING_RELIES_ON_PRESENCE}
     * and can choose to hide or show the video calling icon based on whether a contact supports
     * video.
     */
    public static final String KEY_USE_RCS_PRESENCE_BOOL = "use_rcs_presence_bool";

    
The duration in seconds that platform call and message blocking is disabled after the user contacts emergency services. Platform considers values for below cases: 1) 0 <= VALUE <= 604800(one week): the value will be used as the duration directly. 2) VALUE > 604800(one week): will use the default value as duration instead. 3) VALUE < 0: block will be disabled forever until user re-eanble block manually, the suggested value to disable forever is -1. See android.provider.BlockedNumberContract#notifyEmergencyContact(Context) See android.provider.BlockedNumberContract#isBlocked(Context, String). /**
     * The duration in seconds that platform call and message blocking is disabled after the user
     * contacts emergency services. Platform considers values for below cases:
     *  1) 0 <= VALUE <= 604800(one week): the value will be used as the duration directly.
     *  2) VALUE > 604800(one week): will use the default value as duration instead.
     *  3) VALUE < 0: block will be disabled forever until user re-eanble block manually,
     *     the suggested value to disable forever is -1.
     * See {@code android.provider.BlockedNumberContract#notifyEmergencyContact(Context)}
     * See {@code android.provider.BlockedNumberContract#isBlocked(Context, String)}.
     */
    public static final String KEY_DURATION_BLOCKING_DISABLED_AFTER_EMERGENCY_INT =
            "duration_blocking_disabled_after_emergency_int";

    
Determines whether to enable enhanced call blocking feature on the device.
See Also:
ENHANCED_SETTING_KEY_BLOCK_UNREGISTERED.ENHANCED_SETTING_KEY_BLOCK_UNREGISTERED
ENHANCED_SETTING_KEY_BLOCK_PRIVATE.ENHANCED_SETTING_KEY_BLOCK_PRIVATE
ENHANCED_SETTING_KEY_BLOCK_PAYPHONE.ENHANCED_SETTING_KEY_BLOCK_PAYPHONE

1. For Single SIM(SS) device, it can be customized in both carrier_config_mccmnc.xml
   and vendor.xml.

2. For Dual SIM(DS) device, it should be customized in vendor.xml, since call blocking
   function is used regardless of SIM.
 If true enable enhanced call blocking feature on the device, false otherwise.
@hide
/**
     * Determines whether to enable enhanced call blocking feature on the device.
     * @see SystemContract#ENHANCED_SETTING_KEY_BLOCK_UNREGISTERED
     * @see SystemContract#ENHANCED_SETTING_KEY_BLOCK_PRIVATE
     * @see SystemContract#ENHANCED_SETTING_KEY_BLOCK_PAYPHONE
     * @see SystemContract#ENHANCED_SETTING_KEY_BLOCK_UNKNOWN
     *
     * <p>
     * 1. For Single SIM(SS) device, it can be customized in both carrier_config_mccmnc.xml
     *    and vendor.xml.
     * <p>
     * 2. For Dual SIM(DS) device, it should be customized in vendor.xml, since call blocking
     *    function is used regardless of SIM.
     * <p>
     * If {@code true} enable enhanced call blocking feature on the device, {@code false} otherwise.
     * @hide
     */
    public static final String KEY_SUPPORT_ENHANCED_CALL_BLOCKING_BOOL =
            "support_enhanced_call_blocking_bool";

    
For carriers which require an empty flash to be sent before sending the normal 3-way calling flash, the duration in milliseconds of the empty flash to send. When 0, no empty flash is sent. /**
     * For carriers which require an empty flash to be sent before sending the normal 3-way calling
     * flash, the duration in milliseconds of the empty flash to send.  When {@code 0}, no empty
     * flash is sent.
     */
    public static final String KEY_CDMA_3WAYCALL_FLASH_DELAY_INT = "cdma_3waycall_flash_delay_int";

    
The CDMA roaming mode (aka CDMA system select).
The value should be one of the CDMA_ROAMING_MODE_ constants in TelephonyManager. Values other than TelephonyManager.CDMA_ROAMING_MODE_RADIO_DEFAULT (which is the default) will take precedence over user selection. 
See Also:
TelephonyManager.CDMA_ROAMING_MODE_RADIO_DEFAULT
TelephonyManager.CDMA_ROAMING_MODE_HOME
TelephonyManager.CDMA_ROAMING_MODE_AFFILIATED
TelephonyManager.CDMA_ROAMING_MODE_ANY/**
     * The CDMA roaming mode (aka CDMA system select).
     *
     * <p>The value should be one of the CDMA_ROAMING_MODE_ constants in {@link TelephonyManager}.
     * Values other than {@link TelephonyManager#CDMA_ROAMING_MODE_RADIO_DEFAULT} (which is the
     * default) will take precedence over user selection.
     *
     * @see TelephonyManager#CDMA_ROAMING_MODE_RADIO_DEFAULT
     * @see TelephonyManager#CDMA_ROAMING_MODE_HOME
     * @see TelephonyManager#CDMA_ROAMING_MODE_AFFILIATED
     * @see TelephonyManager#CDMA_ROAMING_MODE_ANY
     */
    public static final String KEY_CDMA_ROAMING_MODE_INT = "cdma_roaming_mode_int";


    
Boolean indicating if support is provided for directly dialing FDN number from FDN list.
If false, this feature is not supported.
@hide
/**
     * Boolean indicating if support is provided for directly dialing FDN number from FDN list.
     * If false, this feature is not supported.
     * @hide
     */
    public static final String KEY_SUPPORT_DIRECT_FDN_DIALING_BOOL =
            "support_direct_fdn_dialing_bool";

    
Report IMEI as device id even if it's a CDMA/LTE phone.
@hide
/**
     * Report IMEI as device id even if it's a CDMA/LTE phone.
     *
     * @hide
     */
    public static final String KEY_FORCE_IMEI_BOOL = "force_imei_bool";

    
The families of Radio Access Technologies that will get clustered and ratcheted,
ie, we will report transitions up within the family, but not down until we change
cells.  This prevents flapping between base technologies and higher techs that are
granted on demand within the cell.
@hide
/**
     * The families of Radio Access Technologies that will get clustered and ratcheted,
     * ie, we will report transitions up within the family, but not down until we change
     * cells.  This prevents flapping between base technologies and higher techs that are
     * granted on demand within the cell.
     * @hide
     */
    public static final String KEY_RATCHET_RAT_FAMILIES =
            "ratchet_rat_families";

    
Flag indicating whether some telephony logic will treat a call which was formerly a video call as if it is still a video call. When true: 
 Logic which will automatically drop a video call which takes place over WIFI when a voice call is answered (see KEY_DROP_VIDEO_CALL_WHEN_ANSWERING_AUDIO_CALL_BOOL. 

Logic which determines whether the user can use TTY calling.
/**
     * Flag indicating whether some telephony logic will treat a call which was formerly a video
     * call as if it is still a video call.  When {@code true}:
     * <p>
     * Logic which will automatically drop a video call which takes place over WIFI when a
     * voice call is answered (see {@link #KEY_DROP_VIDEO_CALL_WHEN_ANSWERING_AUDIO_CALL_BOOL}.
     * <p>
     * Logic which determines whether the user can use TTY calling.
     */
    public static final String KEY_TREAT_DOWNGRADED_VIDEO_CALLS_AS_VIDEO_CALLS_BOOL =
            "treat_downgraded_video_calls_as_video_calls_bool";

    
When true, if the user is in an ongoing video call over WIFI and answers an incoming audio call, the video call will be disconnected before the audio call is answered. This is in contrast to the usual expected behavior where a foreground video call would be put into the background and held when an incoming audio call is answered. /**
     * When {@code true}, if the user is in an ongoing video call over WIFI and answers an incoming
     * audio call, the video call will be disconnected before the audio call is answered.  This is
     * in contrast to the usual expected behavior where a foreground video call would be put into
     * the background and held when an incoming audio call is answered.
     */
    public static final String KEY_DROP_VIDEO_CALL_WHEN_ANSWERING_AUDIO_CALL_BOOL =
            "drop_video_call_when_answering_audio_call_bool";

    
Flag indicating whether the carrier supports merging wifi calls when VoWIFI is disabled.
This can happen in the case of a carrier which allows offloading video calls to WIFI
separately of whether voice over wifi is enabled.  In such a scenario when two video calls
are downgraded to voice, they remain over wifi.  However, if VoWIFI is disabled, these calls
cannot be merged.
/**
     * Flag indicating whether the carrier supports merging wifi calls when VoWIFI is disabled.
     * This can happen in the case of a carrier which allows offloading video calls to WIFI
     * separately of whether voice over wifi is enabled.  In such a scenario when two video calls
     * are downgraded to voice, they remain over wifi.  However, if VoWIFI is disabled, these calls
     * cannot be merged.
     */
    public static final String KEY_ALLOW_MERGE_WIFI_CALLS_WHEN_VOWIFI_OFF_BOOL =
            "allow_merge_wifi_calls_when_vowifi_off_bool";

    
Flag indicating whether the carrier supports the Hold command while in an IMS call.
 The device configuration value config_device_respects_hold_carrier_config ultimately controls whether this carrier configuration option is used. Where config_device_respects_hold_carrier_config is false, the value of the KEY_ALLOW_HOLD_IN_IMS_CALL_BOOL carrier configuration option is ignored. 
@hide
/**
     * Flag indicating whether the carrier supports the Hold command while in an IMS call.
     * <p>
     * The device configuration value {@code config_device_respects_hold_carrier_config} ultimately
     * controls whether this carrier configuration option is used.  Where
     * {@code config_device_respects_hold_carrier_config} is false, the value of the
     * {@link #KEY_ALLOW_HOLD_IN_IMS_CALL_BOOL} carrier configuration option is ignored.
     * @hide
     */
    public static final String KEY_ALLOW_HOLD_IN_IMS_CALL_BOOL = "allow_hold_in_ims_call";

    
Flag indicating whether the carrier supports call deflection for an incoming IMS call.
@hide
/**
     * Flag indicating whether the carrier supports call deflection for an incoming IMS call.
     * @hide
     */
    public static final String KEY_CARRIER_ALLOW_DEFLECT_IMS_CALL_BOOL =
            "carrier_allow_deflect_ims_call_bool";

    
Flag indicating whether the carrier always wants to play an "on-hold" tone when a call has
been remotely held.
 When true, if the IMS stack indicates that the call session has been held, a signal will be sent from Telephony to play an audible "on-hold" tone played to the user. When false, a hold tone will only be played if the audio session becomes inactive. 
@hide
/**
     * Flag indicating whether the carrier always wants to play an "on-hold" tone when a call has
     * been remotely held.
     * <p>
     * When {@code true}, if the IMS stack indicates that the call session has been held, a signal
     * will be sent from Telephony to play an audible "on-hold" tone played to the user.
     * When {@code false}, a hold tone will only be played if the audio session becomes inactive.
     * @hide
     */
    public static final String KEY_ALWAYS_PLAY_REMOTE_HOLD_TONE_BOOL =
            "always_play_remote_hold_tone_bool";

    
When true, the Telephony stack will automatically turn off airplane mode and retry a wifi
emergency call over the cell network if the initial attempt at dialing was met with a SIP 308
error.
@hide
/**
     * When true, the Telephony stack will automatically turn off airplane mode and retry a wifi
     * emergency call over the cell network if the initial attempt at dialing was met with a SIP 308
     * error.
     * @hide
     */
    public static final String KEY_AUTO_RETRY_FAILED_WIFI_EMERGENCY_CALL =
            "auto_retry_failed_wifi_emergency_call";

    
When true, indicates that adding a call is disabled when there is an ongoing video call
or when there is an ongoing call on wifi which was downgraded from video and VoWifi is
turned off.
/**
     * When true, indicates that adding a call is disabled when there is an ongoing video call
     * or when there is an ongoing call on wifi which was downgraded from video and VoWifi is
     * turned off.
     */
    public static final String KEY_ALLOW_ADD_CALL_DURING_VIDEO_CALL_BOOL =
            "allow_add_call_during_video_call";

    
When true, indicates that the HD audio icon in the in-call screen should not be shown for
VoWifi calls.
@hide
/**
     * When true, indicates that the HD audio icon in the in-call screen should not be shown for
     * VoWifi calls.
     * @hide
     */
    public static final String KEY_WIFI_CALLS_CAN_BE_HD_AUDIO = "wifi_calls_can_be_hd_audio";

    
When true, indicates that the HD audio icon in the in-call screen should not be shown for
video calls.
@hide
/**
     * When true, indicates that the HD audio icon in the in-call screen should not be shown for
     * video calls.
     * @hide
     */
    public static final String KEY_VIDEO_CALLS_CAN_BE_HD_AUDIO = "video_calls_can_be_hd_audio";

    
When true, indicates that the HD audio icon in the in-call screen should be shown for
GSM/CDMA calls.
@hide
/**
     * When true, indicates that the HD audio icon in the in-call screen should be shown for
     * GSM/CDMA calls.
     * @hide
     */
    public static final String KEY_GSM_CDMA_CALLS_CAN_BE_HD_AUDIO =
            "gsm_cdma_calls_can_be_hd_audio";

    
Whether system apps are allowed to use fallback if carrier video call is not available. Defaults to true. 
@hide
/**
     * Whether system apps are allowed to use fallback if carrier video call is not available.
     * Defaults to {@code true}.
     *
     * @hide
     */
    public static final String KEY_ALLOW_VIDEO_CALLING_FALLBACK_BOOL =
            "allow_video_calling_fallback_bool";

    
Defines operator-specific ImsReasonInfo mappings. Format: "ORIGINAL_CODE|MESSAGE|NEW_CODE" Where ORIGINAL_CODE corresponds to a ImsReasonInfo.getCode() code, MESSAGE corresponds to an expected ImsReasonInfo.getExtraMessage() string, and NEW_CODE is the new ImsReasonInfo#CODE_* which this combination of original code and message shall be remapped to. Note: If * is specified for the original code, any ImsReasonInfo with the matching MESSAGE will be remapped to NEW_CODE. Example: "501|call completion elsewhere|1014" When the ImsReasonInfo.getCode() is ImsReasonInfo.CODE_USER_TERMINATED and the ImsReasonInfo.getExtraMessage() is "call completion elsewhere", ImsReasonInfo.CODE_ANSWERED_ELSEWHERE shall be used as the ImsReasonInfo code instead. 
@hide
/**
     * Defines operator-specific {@link ImsReasonInfo} mappings.
     *
     * Format: "ORIGINAL_CODE|MESSAGE|NEW_CODE"
     * Where {@code ORIGINAL_CODE} corresponds to a {@link ImsReasonInfo#getCode()} code,
     * {@code MESSAGE} corresponds to an expected {@link ImsReasonInfo#getExtraMessage()} string,
     * and {@code NEW_CODE} is the new {@code ImsReasonInfo#CODE_*} which this combination of
     * original code and message shall be remapped to.
     *
     * Note: If {@code *} is specified for the original code, any ImsReasonInfo with the matching
     * {@code MESSAGE} will be remapped to {@code NEW_CODE}.
     *
     * Example: "501|call completion elsewhere|1014"
     * When the {@link ImsReasonInfo#getCode()} is {@link ImsReasonInfo#CODE_USER_TERMINATED} and
     * the {@link ImsReasonInfo#getExtraMessage()} is {@code "call completion elsewhere"},
     * {@link ImsReasonInfo#CODE_ANSWERED_ELSEWHERE} shall be used as the {@link ImsReasonInfo}
     * code instead.
     * @hide
     */
    public static final String KEY_IMS_REASONINFO_MAPPING_STRING_ARRAY =
            "ims_reasoninfo_mapping_string_array";

    
When false, use default title for Enhanced 4G LTE Mode settings. When true, use the variant. 
@hide
Deprecated:
use KEY_ENHANCED_4G_LTE_TITLE_VARIANT_INT./**
     * When {@code false}, use default title for Enhanced 4G LTE Mode settings.
     * When {@code true}, use the variant.
     * @hide
     * @deprecated use {@link #KEY_ENHANCED_4G_LTE_TITLE_VARIANT_INT}.
     */
    @Deprecated
    public static final String KEY_ENHANCED_4G_LTE_TITLE_VARIANT_BOOL =
            "enhanced_4g_lte_title_variant_bool";

    
The index indicates the carrier specified title string of Enahnce 4G LTE Mode settings.
Default value is 0, which indicates the default title string.
@hide
/**
     * The index indicates the carrier specified title string of Enahnce 4G LTE Mode settings.
     * Default value is 0, which indicates the default title string.
     * @hide
     */
    public static final String KEY_ENHANCED_4G_LTE_TITLE_VARIANT_INT =
            "enhanced_4g_lte_title_variant_int";

    
Indicates whether the carrier wants to notify the user when handover of an LTE video call to
WIFI fails.
 When true, if a video call starts on LTE and the modem reports a failure to handover the call to WIFI or if no handover success is reported within 60 seconds of call initiation, the TelephonyManager.EVENT_HANDOVER_TO_WIFI_FAILED event is raised on the connection. 
@hide
/**
     * Indicates whether the carrier wants to notify the user when handover of an LTE video call to
     * WIFI fails.
     * <p>
     * When {@code true}, if a video call starts on LTE and the modem reports a failure to handover
     * the call to WIFI or if no handover success is reported within 60 seconds of call initiation,
     * the {@link android.telephony.TelephonyManager#EVENT_HANDOVER_TO_WIFI_FAILED} event is raised
     * on the connection.
     * @hide
     */
    public static final String KEY_NOTIFY_VT_HANDOVER_TO_WIFI_FAILURE_BOOL =
            "notify_vt_handover_to_wifi_failure_bool";

    
A upper case list of CNAP names that are unhelpful to the user for distinguising calls and
should be filtered out of the CNAP information. This includes CNAP names such as "WIRELESS
CALLER" or "UNKNOWN NAME". By default, if there are no filtered names for this carrier, null
is returned.
@hide
/**
     * A upper case list of CNAP names that are unhelpful to the user for distinguising calls and
     * should be filtered out of the CNAP information. This includes CNAP names such as "WIRELESS
     * CALLER" or "UNKNOWN NAME". By default, if there are no filtered names for this carrier, null
     * is returned.
     * @hide
     */
    public static final String KEY_FILTERED_CNAP_NAMES_STRING_ARRAY = "filtered_cnap_names_string_array";

    
The RCS configuration server URL. This URL is used to initiate RCS provisioning.
/**
     * The RCS configuration server URL. This URL is used to initiate RCS provisioning.
     */
    public static final String KEY_RCS_CONFIG_SERVER_URL_STRING = "rcs_config_server_url_string";

    
Determine whether user can change Wi-Fi Calling preference in roaming. false - roaming preference KEY_CARRIER_DEFAULT_WFC_IMS_ROAMING_MODE_INT is the same as home preference KEY_CARRIER_DEFAULT_WFC_IMS_MODE_INT and cannot be changed. true - roaming preference can be changed by user independently. 
@hide
/**
     * Determine whether user can change Wi-Fi Calling preference in roaming.
     * {@code false} - roaming preference {@link KEY_CARRIER_DEFAULT_WFC_IMS_ROAMING_MODE_INT} is
     *                 the same as home preference {@link KEY_CARRIER_DEFAULT_WFC_IMS_MODE_INT}
     *                 and cannot be changed.
     * {@code true}  - roaming preference can be changed by user independently.
     *
     * @hide
     */
    public static final String KEY_EDITABLE_WFC_ROAMING_MODE_BOOL =
            "editable_wfc_roaming_mode_bool";

    
Determine whether current lpp_mode used for E-911 needs to be kept persistently. false - not keeping the lpp_mode means using default configuration of gps.conf when sim is not presented. true - current lpp_profile of carrier will be kepted persistently even after sim is removed. 
@hide
/**
     * Determine whether current lpp_mode used for E-911 needs to be kept persistently.
     * {@code false} - not keeping the lpp_mode means using default configuration of gps.conf
     *                 when sim is not presented.
     * {@code true}  - current lpp_profile of carrier will be kepted persistently
     *                 even after sim is removed.
     *
     * @hide
     */
    public static final String KEY_PERSIST_LPP_MODE_BOOL = "persist_lpp_mode_bool";

    
Carrier specified WiFi networks.
@hide
/**
     * Carrier specified WiFi networks.
     * @hide
     */
    public static final String KEY_CARRIER_WIFI_STRING_ARRAY = "carrier_wifi_string_array";

    
Time delay (in ms) after which we show the notification to switch the preferred
network.
@hide
/**
     * Time delay (in ms) after which we show the notification to switch the preferred
     * network.
     * @hide
     */
    public static final String KEY_PREF_NETWORK_NOTIFICATION_DELAY_INT =
            "network_notification_delay_int";

    
Time delay (in ms) after which we show the notification for emergency calls,
while the device is registered over WFC. Default value is -1, which indicates
that this notification is not pertinent for a particular carrier. We've added a delay
to prevent false positives.
@hide
/**
     * Time delay (in ms) after which we show the notification for emergency calls,
     * while the device is registered over WFC. Default value is -1, which indicates
     * that this notification is not pertinent for a particular carrier. We've added a delay
     * to prevent false positives.
     * @hide
     */
    public static final String KEY_EMERGENCY_NOTIFICATION_DELAY_INT =
            "emergency_notification_delay_int";

    
When true, the carrier allows the user of the TelephonyManager.sendUssdRequest(String, UssdResponseCallback, Handler) API to perform USSD requests. True by default. 
@hide
/**
     * When {@code true}, the carrier allows the user of the
     * {@link TelephonyManager#sendUssdRequest(String, TelephonyManager.UssdResponseCallback,
     * Handler)} API to perform USSD requests.  {@code True} by default.
     * @hide
     */
    public static final String KEY_ALLOW_USSD_REQUESTS_VIA_TELEPHONY_MANAGER_BOOL =
            "allow_ussd_requests_via_telephony_manager_bool";

    
Indicates whether the carrier supports 3gpp call forwarding MMI codes while roaming. If
false, the user will be notified that call forwarding is not available when the MMI code
fails.
/**
     * Indicates whether the carrier supports 3gpp call forwarding MMI codes while roaming. If
     * false, the user will be notified that call forwarding is not available when the MMI code
     * fails.
     */
    public static final String KEY_SUPPORT_3GPP_CALL_FORWARDING_WHILE_ROAMING_BOOL =
        "support_3gpp_call_forwarding_while_roaming_bool";

    
Boolean indicating whether to display voicemail number as default call forwarding number in
call forwarding settings.
If true, display vm number when cf number is null.
If false, display the cf number from network.
By default this value is false.
@hide
/**
     * Boolean indicating whether to display voicemail number as default call forwarding number in
     * call forwarding settings.
     * If true, display vm number when cf number is null.
     * If false, display the cf number from network.
     * By default this value is false.
     * @hide
     */
    public static final String KEY_DISPLAY_VOICEMAIL_NUMBER_AS_DEFAULT_CALL_FORWARDING_NUMBER_BOOL =
            "display_voicemail_number_as_default_call_forwarding_number";

    
When true, the user will be notified when they attempt to place an international call when the call is placed using wifi calling. 
@hide
/**
     * When {@code true}, the user will be notified when they attempt to place an international call
     * when the call is placed using wifi calling.
     * @hide
     */
    public static final String KEY_NOTIFY_INTERNATIONAL_CALL_ON_WFC_BOOL =
            "notify_international_call_on_wfc_bool";

    
Flag specifying whether to show an alert dialog for video call charges. By default this value is false. 
@hide
/**
     * Flag specifying whether to show an alert dialog for video call charges.
     * By default this value is {@code false}.
     * @hide
     */
    public static final String KEY_SHOW_VIDEO_CALL_CHARGES_ALERT_DIALOG_BOOL =
            "show_video_call_charges_alert_dialog_bool";

    
An array containing custom call forwarding number prefixes that will be blocked while the device is reporting that it is roaming. By default, there are no custom call forwarding prefixes and none of these numbers will be filtered. If one or more entries are present, the system will not complete the call and display an error message. To display a message to the user when call forwarding fails for 3gpp MMI codes while roaming, use the KEY_SUPPORT_3GPP_CALL_FORWARDING_WHILE_ROAMING_BOOL option instead. /**
     * An array containing custom call forwarding number prefixes that will be blocked while the
     * device is reporting that it is roaming. By default, there are no custom call
     * forwarding prefixes and none of these numbers will be filtered. If one or more entries are
     * present, the system will not complete the call and display an error message.
     *
     * To display a message to the user when call forwarding fails for 3gpp MMI codes while roaming,
     * use the {@link #KEY_SUPPORT_3GPP_CALL_FORWARDING_WHILE_ROAMING_BOOL} option instead.
     */
    public static final String KEY_CALL_FORWARDING_BLOCKS_WHILE_ROAMING_STRING_ARRAY =
            "call_forwarding_blocks_while_roaming_string_array";

    
The day of the month (1-31) on which the data cycle rolls over.

If the current month does not have this day, the cycle will roll over at
the start of the next month.

This setting may be still overridden by explicit user choice. By default,
the platform value will be used.
/**
     * The day of the month (1-31) on which the data cycle rolls over.
     * <p>
     * If the current month does not have this day, the cycle will roll over at
     * the start of the next month.
     * <p>
     * This setting may be still overridden by explicit user choice. By default,
     * the platform value will be used.
     */
    public static final String KEY_MONTHLY_DATA_CYCLE_DAY_INT =
            "monthly_data_cycle_day_int";

    
When KEY_MONTHLY_DATA_CYCLE_DAY_INT, KEY_DATA_LIMIT_THRESHOLD_BYTES_LONG, or KEY_DATA_WARNING_THRESHOLD_BYTES_LONG are set to this value, the platform default value will be used for that key. 
@hide
/**
     * When {@link #KEY_MONTHLY_DATA_CYCLE_DAY_INT}, {@link #KEY_DATA_LIMIT_THRESHOLD_BYTES_LONG},
     * or {@link #KEY_DATA_WARNING_THRESHOLD_BYTES_LONG} are set to this value, the platform default
     * value will be used for that key.
     *
     * @hide
     */
    @Deprecated
    public static final int DATA_CYCLE_USE_PLATFORM_DEFAULT = -1;

    
Flag indicating that a data cycle threshold should be disabled.
 If KEY_DATA_WARNING_THRESHOLD_BYTES_LONG is set to this value, the platform's default data warning, if one exists, will be disabled. A user selected data warning will not be overridden. 
 If KEY_DATA_LIMIT_THRESHOLD_BYTES_LONG is set to this value, the platform's default data limit, if one exists, will be disabled. A user selected data limit will not be overridden. /**
     * Flag indicating that a data cycle threshold should be disabled.
     * <p>
     * If {@link #KEY_DATA_WARNING_THRESHOLD_BYTES_LONG} is set to this value, the platform's
     * default data warning, if one exists, will be disabled. A user selected data warning will not
     * be overridden.
     * <p>
     * If {@link #KEY_DATA_LIMIT_THRESHOLD_BYTES_LONG} is set to this value, the platform's
     * default data limit, if one exists, will be disabled. A user selected data limit will not be
     * overridden.
     */
    public static final int DATA_CYCLE_THRESHOLD_DISABLED = -2;

    
Controls the data usage warning.
 If the user uses more than this amount of data in their billing cycle, as defined by KEY_MONTHLY_DATA_CYCLE_DAY_INT, the user will be alerted about the usage. If the value is set to DATA_CYCLE_THRESHOLD_DISABLED, the data usage warning will be disabled. 

This setting may be overridden by explicit user choice. By default, the platform value
will be used.
/**
     * Controls the data usage warning.
     * <p>
     * If the user uses more than this amount of data in their billing cycle, as defined by
     * {@link #KEY_MONTHLY_DATA_CYCLE_DAY_INT}, the user will be alerted about the usage.
     * If the value is set to {@link #DATA_CYCLE_THRESHOLD_DISABLED}, the data usage warning will
     * be disabled.
     * <p>
     * This setting may be overridden by explicit user choice. By default, the platform value
     * will be used.
     */
    public static final String KEY_DATA_WARNING_THRESHOLD_BYTES_LONG =
            "data_warning_threshold_bytes_long";

    
Controls if the device should automatically notify the user as they reach their cellular data warning. When set to false the carrier is expected to have implemented their own notification mechanism. 
@hide
/**
     * Controls if the device should automatically notify the user as they reach
     * their cellular data warning. When set to {@code false} the carrier is
     * expected to have implemented their own notification mechanism.
     * @hide
     */
    public static final String KEY_DATA_WARNING_NOTIFICATION_BOOL =
            "data_warning_notification_bool";

    
Controls the cellular data limit.
 If the user uses more than this amount of data in their billing cycle, as defined by KEY_MONTHLY_DATA_CYCLE_DAY_INT, cellular data will be turned off by the user's phone. If the value is set to DATA_CYCLE_THRESHOLD_DISABLED, the data limit will be disabled. 

This setting may be overridden by explicit user choice. By default, the platform value
will be used.
/**
     * Controls the cellular data limit.
     * <p>
     * If the user uses more than this amount of data in their billing cycle, as defined by
     * {@link #KEY_MONTHLY_DATA_CYCLE_DAY_INT}, cellular data will be turned off by the user's
     * phone. If the value is set to {@link #DATA_CYCLE_THRESHOLD_DISABLED}, the data limit will be
     * disabled.
     * <p>
     * This setting may be overridden by explicit user choice. By default, the platform value
     * will be used.
     */
    public static final String KEY_DATA_LIMIT_THRESHOLD_BYTES_LONG =
            "data_limit_threshold_bytes_long";

    
Controls if the device should automatically notify the user as they reach their cellular data limit. When set to false the carrier is expected to have implemented their own notification mechanism. 
@hide
/**
     * Controls if the device should automatically notify the user as they reach
     * their cellular data limit. When set to {@code false} the carrier is
     * expected to have implemented their own notification mechanism.
     * @hide
     */
    public static final String KEY_DATA_LIMIT_NOTIFICATION_BOOL =
            "data_limit_notification_bool";

    
Controls if the device should automatically notify the user when rapid cellular data usage is observed. When set to false the carrier is expected to have implemented their own notification mechanism. 
@hide
/**
     * Controls if the device should automatically notify the user when rapid
     * cellular data usage is observed. When set to {@code false} the carrier is
     * expected to have implemented their own notification mechanism.
     * @hide
     */
    public static final String KEY_DATA_RAPID_NOTIFICATION_BOOL =
            "data_rapid_notification_bool";

    
Offset to be reduced from rsrp threshold while calculating signal strength level.
@hide
/**
     * Offset to be reduced from rsrp threshold while calculating signal strength level.
     * @hide
     */
    public static final String KEY_LTE_EARFCNS_RSRP_BOOST_INT = "lte_earfcns_rsrp_boost_int";

    
List of EARFCN (E-UTRA Absolute Radio Frequency Channel Number,
Reference: 3GPP TS 36.104 5.4.3) inclusive ranges on which lte_rsrp_boost_int
will be applied. Format of the String array is expected to be {"erafcn1_start-earfcn1_end",
"earfcn2_start-earfcn2_end" ... }
@hide
/**
     * List of EARFCN (E-UTRA Absolute Radio Frequency Channel Number,
     * Reference: 3GPP TS 36.104 5.4.3) inclusive ranges on which lte_rsrp_boost_int
     * will be applied. Format of the String array is expected to be {"erafcn1_start-earfcn1_end",
     * "earfcn2_start-earfcn2_end" ... }
     * @hide
     */
    public static final String KEY_BOOSTED_LTE_EARFCNS_STRING_ARRAY =
            "boosted_lte_earfcns_string_array";

    
Determine whether to use only RSRP for the number of LTE signal bars.
@hide
/**
     * Determine whether to use only RSRP for the number of LTE signal bars.
     * @hide
     */
    public static final String KEY_USE_ONLY_RSRP_FOR_LTE_SIGNAL_BAR_BOOL =
            "use_only_rsrp_for_lte_signal_bar_bool";

    
Key identifying if voice call barring notification is required to be shown to the user.
@hide
/**
     * Key identifying if voice call barring notification is required to be shown to the user.
     * @hide
     */
    public static final String KEY_DISABLE_VOICE_BARRING_NOTIFICATION_BOOL =
            "disable_voice_barring_notification_bool";

    
List of operators considered non-roaming which won't show roaming icon.

Can use mcc or mcc+mnc as item. For example, 302 or 21407.
If operators, 21404 and 21407, make roaming agreements, users of 21404 should not see
the roaming icon as using 21407 network.
@hide
/**
     * List of operators considered non-roaming which won't show roaming icon.
     * <p>
     * Can use mcc or mcc+mnc as item. For example, 302 or 21407.
     * If operators, 21404 and 21407, make roaming agreements, users of 21404 should not see
     * the roaming icon as using 21407 network.
     * @hide
     */
    public static final String KEY_NON_ROAMING_OPERATOR_STRING_ARRAY =
            "non_roaming_operator_string_array";

    
List of operators considered roaming with the roaming icon.

Can use mcc or mcc+mnc as item. For example, 302 or 21407.
If operators, 21404 and 21407, make roaming agreements, users of 21404 should see
the roaming icon as using 21407 network.
 A match on this supersedes a match on KEY_NON_ROAMING_OPERATOR_STRING_ARRAY. 
@hide
/**
     * List of operators considered roaming with the roaming icon.
     * <p>
     * Can use mcc or mcc+mnc as item. For example, 302 or 21407.
     * If operators, 21404 and 21407, make roaming agreements, users of 21404 should see
     * the roaming icon as using 21407 network.
     * <p>
     * A match on this supersedes a match on {@link #KEY_NON_ROAMING_OPERATOR_STRING_ARRAY}.
     * @hide
     */
    public static final String KEY_ROAMING_OPERATOR_STRING_ARRAY =
            "roaming_operator_string_array";

    
URL from which the proto containing the public key of the Carrier used for
IMSI encryption will be downloaded.
@hide
/**
     * URL from which the proto containing the public key of the Carrier used for
     * IMSI encryption will be downloaded.
     * @hide
     */
    public static final String IMSI_KEY_DOWNLOAD_URL_STRING = "imsi_key_download_url_string";

    
Identifies if the key is available for WLAN or EPDG or both. The value is a bitmask. 0 indicates that neither EPDG or WLAN is enabled. 1 indicates that key type TelephonyManager.KEY_TYPE_EPDG is enabled. 2 indicates that key type TelephonyManager.KEY_TYPE_WLAN is enabled. 3 indicates that both are enabled. 
@hide
/**
     * Identifies if the key is available for WLAN or EPDG or both. The value is a bitmask.
     * 0 indicates that neither EPDG or WLAN is enabled.
     * 1 indicates that key type {@link TelephonyManager#KEY_TYPE_EPDG} is enabled.
     * 2 indicates that key type {@link TelephonyManager#KEY_TYPE_WLAN} is enabled.
     * 3 indicates that both are enabled.
     * @hide
     */
    public static final String IMSI_KEY_AVAILABILITY_INT = "imsi_key_availability_int";


    
Key identifying if the CDMA Caller ID presentation and suppression MMI codes
should be converted to 3GPP CLIR codes when a multimode (CDMA+UMTS+LTE) device is roaming
on a 3GPP network. Specifically *67 will be converted to #31# and
 *82 will be converted to *31# before dialing a call when this key is
set TRUE and device is roaming on a 3GPP network.
@hide
/**
     * Key identifying if the CDMA Caller ID presentation and suppression MMI codes
     * should be converted to 3GPP CLIR codes when a multimode (CDMA+UMTS+LTE) device is roaming
     * on a 3GPP network. Specifically *67<number> will be converted to #31#<number> and
     * *82<number> will be converted to *31#<number> before dialing a call when this key is
     * set TRUE and device is roaming on a 3GPP network.
     * @hide
     */
    public static final String KEY_CONVERT_CDMA_CALLER_ID_MMI_CODES_WHILE_ROAMING_ON_3GPP_BOOL =
            "convert_cdma_caller_id_mmi_codes_while_roaming_on_3gpp_bool";

    
Flag specifying whether IMS registration state menu is shown in Status Info setting,
default to false.
@hide
/**
     * Flag specifying whether IMS registration state menu is shown in Status Info setting,
     * default to false.
     * @hide
     */
    public static final String KEY_SHOW_IMS_REGISTRATION_STATUS_BOOL =
            "show_ims_registration_status_bool";

    
Flag indicating whether the carrier supports RTT over IMS.
/**
     * Flag indicating whether the carrier supports RTT over IMS.
     */
    public static final String KEY_RTT_SUPPORTED_BOOL = "rtt_supported_bool";

    
The flag to disable the popup dialog which warns the user of data charges.
@hide
/**
     * The flag to disable the popup dialog which warns the user of data charges.
     * @hide
     */
    public static final String KEY_DISABLE_CHARGE_INDICATION_BOOL =
            "disable_charge_indication_bool";

    
Boolean indicating whether to skip the call forwarding (CF) fail-to-disable dialog. The logic used to determine whether we succeeded in disabling is carrier specific, so the dialog may not always be accurate. false - show CF fail-to-disable dialog. true - skip showing CF fail-to-disable dialog. 
@hide
/**
     * Boolean indicating whether to skip the call forwarding (CF) fail-to-disable dialog.
     * The logic used to determine whether we succeeded in disabling is carrier specific,
     * so the dialog may not always be accurate.
     * {@code false} - show CF fail-to-disable dialog.
     * {@code true}  - skip showing CF fail-to-disable dialog.
     *
     * @hide
     */
    public static final String KEY_SKIP_CF_FAIL_TO_DISABLE_DIALOG_BOOL =
            "skip_cf_fail_to_disable_dialog_bool";

    
List of the FAC (feature access codes) to dial as a normal call.
@hide
/**
     * List of the FAC (feature access codes) to dial as a normal call.
     * @hide
     */
    public static final String KEY_FEATURE_ACCESS_CODES_STRING_ARRAY =
            "feature_access_codes_string_array";

    
Determines if the carrier wants to identify high definition calls in the call log.
@hide
/**
     * Determines if the carrier wants to identify high definition calls in the call log.
     * @hide
     */
    public static final String KEY_IDENTIFY_HIGH_DEFINITION_CALLS_IN_CALL_LOG_BOOL =
            "identify_high_definition_calls_in_call_log_bool";

    
Flag specifying whether to use the ServiceState roaming status, which can be affected by other carrier configs (e.g. KEY_GSM_NONROAMING_NETWORKS_STRING_ARRAY), when setting the SPN display. 
 If true, the SPN display uses ServiceState.getRoaming. If false the SPN display checks if the current MCC/MNC is different from the SIM card's MCC/MNC. 
See Also:
KEY_GSM_ROAMING_NETWORKS_STRING_ARRAY
KEY_GSM_NONROAMING_NETWORKS_STRING_ARRAY
KEY_NON_ROAMING_OPERATOR_STRING_ARRAY
KEY_ROAMING_OPERATOR_STRING_ARRAY
KEY_FORCE_HOME_NETWORK_BOOL
@hide
/**
     * Flag specifying whether to use the {@link ServiceState} roaming status, which can be
     * affected by other carrier configs (e.g.
     * {@link #KEY_GSM_NONROAMING_NETWORKS_STRING_ARRAY}), when setting the SPN display.
     * <p>
     * If {@code true}, the SPN display uses {@link ServiceState#getRoaming}.
     * If {@code false} the SPN display checks if the current MCC/MNC is different from the
     * SIM card's MCC/MNC.
     *
     * @see KEY_GSM_ROAMING_NETWORKS_STRING_ARRAY
     * @see KEY_GSM_NONROAMING_NETWORKS_STRING_ARRAY
     * @see KEY_NON_ROAMING_OPERATOR_STRING_ARRAY
     * @see KEY_ROAMING_OPERATOR_STRING_ARRAY
     * @see KEY_FORCE_HOME_NETWORK_BOOL
     *
     * @hide
     */
    public static final String KEY_SPN_DISPLAY_RULE_USE_ROAMING_FROM_SERVICE_STATE_BOOL =
            "spn_display_rule_use_roaming_from_service_state_bool";

    
Determines whether any carrier has been identified and its specific config has been applied,
default to false.
@hide
/**
     * Determines whether any carrier has been identified and its specific config has been applied,
     * default to false.
     * @hide
     */
    public static final String KEY_CARRIER_CONFIG_APPLIED_BOOL = "carrier_config_applied_bool";

    
Determines whether we should show a warning asking the user to check with their carrier
on pricing when the user enabled data roaming.
default to false.
@hide
/**
     * Determines whether we should show a warning asking the user to check with their carrier
     * on pricing when the user enabled data roaming.
     * default to false.
     * @hide
     */
    public static final String KEY_CHECK_PRICING_WITH_CARRIER_FOR_DATA_ROAMING_BOOL =
            "check_pricing_with_carrier_data_roaming_bool";

    
A list of 4 LTE RSRP thresholds above which a signal level is considered POOR,
MODERATE, GOOD, or EXCELLENT, to be used in SignalStrength reporting.
Note that the min and max thresholds are fixed at -140 and -44, as explained in
TS 136.133 9.1.4 - RSRP Measurement Report Mapping.

See SignalStrength#MAX_LTE_RSRP and SignalStrength#MIN_LTE_RSRP. Any signal level outside
these boundaries is considered invalid.
@hide
/**
     * A list of 4 LTE RSRP thresholds above which a signal level is considered POOR,
     * MODERATE, GOOD, or EXCELLENT, to be used in SignalStrength reporting.
     *
     * Note that the min and max thresholds are fixed at -140 and -44, as explained in
     * TS 136.133 9.1.4 - RSRP Measurement Report Mapping.
     * <p>
     * See SignalStrength#MAX_LTE_RSRP and SignalStrength#MIN_LTE_RSRP. Any signal level outside
     * these boundaries is considered invalid.
     * @hide
     */
    public static final String KEY_LTE_RSRP_THRESHOLDS_INT_ARRAY =
            "lte_rsrp_thresholds_int_array";

    
Decides when clients try to bind to iwlan network service, which package name will
the binding intent go to.
@hide
/**
     * Decides when clients try to bind to iwlan network service, which package name will
     * the binding intent go to.
     * @hide
     */
    public static final String KEY_CARRIER_NETWORK_SERVICE_WLAN_PACKAGE_OVERRIDE_STRING
             = "carrier_network_service_wlan_package_override_string";

    
Decides when clients try to bind to wwan (cellular) network service, which package name will
the binding intent go to.
@hide
/**
     * Decides when clients try to bind to wwan (cellular) network service, which package name will
     * the binding intent go to.
     * @hide
     */
    public static final String KEY_CARRIER_NETWORK_SERVICE_WWAN_PACKAGE_OVERRIDE_STRING
            = "carrier_network_service_wwan_package_override_string";

    
A list of 4 LTE RSCP thresholds above which a signal level is considered POOR,
MODERATE, GOOD, or EXCELLENT, to be used in SignalStrength reporting.
Note that the min and max thresholds are fixed at -120 and -24, as set in 3GPP TS 27.007
section 8.69.

See SignalStrength#MAX_WCDMA_RSCP and SignalStrength#MIN_WDCMA_RSCP. Any signal level outside
these boundaries is considered invalid.
@hide
/**
     * A list of 4 LTE RSCP thresholds above which a signal level is considered POOR,
     * MODERATE, GOOD, or EXCELLENT, to be used in SignalStrength reporting.
     *
     * Note that the min and max thresholds are fixed at -120 and -24, as set in 3GPP TS 27.007
     * section 8.69.
     * <p>
     * See SignalStrength#MAX_WCDMA_RSCP and SignalStrength#MIN_WDCMA_RSCP. Any signal level outside
     * these boundaries is considered invalid.
     * @hide
     */
    public static final String KEY_WCDMA_RSCP_THRESHOLDS_INT_ARRAY =
            "wcdma_rscp_thresholds_int_array";

    
The default measurement to use for signal strength reporting. If this is not specified, the
RSSI is used.

e.g.) To use RSCP by default, set the value to "rscp". The signal strength level will
then be determined by #KEY_WCDMA_RSCP_THRESHOLDS_INT_ARRAY

Currently this only supports the value "rscp"
@hide
/**
     * The default measurement to use for signal strength reporting. If this is not specified, the
     * RSSI is used.
     * <p>
     * e.g.) To use RSCP by default, set the value to "rscp". The signal strength level will
     * then be determined by #KEY_WCDMA_RSCP_THRESHOLDS_INT_ARRAY
     * <p>
     * Currently this only supports the value "rscp"
     * @hide
     */
    public static final String KEY_WCDMA_DEFAULT_SIGNAL_STRENGTH_MEASUREMENT_STRING =
            "wcdma_default_signal_strength_measurement_string";

    
When a partial sms / mms message stay in raw table for too long without being completed,
we expire them and delete them from the raw table. This carrier config defines the
expiration time.
@hide
/**
     * When a partial sms / mms message stay in raw table for too long without being completed,
     * we expire them and delete them from the raw table. This carrier config defines the
     * expiration time.
     * @hide
     */
    public static final String KEY_UNDELIVERED_SMS_MESSAGE_EXPIRATION_TIME =
            "undelivered_sms_message_expiration_time";

    
The default value for every variable. /** The default value for every variable. */
    private final static PersistableBundle sDefaults;

    static {
        sDefaults = new PersistableBundle();
        sDefaults.putBoolean(KEY_ALLOW_HOLD_IN_IMS_CALL_BOOL, true);
        sDefaults.putBoolean(KEY_CARRIER_ALLOW_DEFLECT_IMS_CALL_BOOL, false);
        sDefaults.putBoolean(KEY_ALWAYS_PLAY_REMOTE_HOLD_TONE_BOOL, false);
        sDefaults.putBoolean(KEY_AUTO_RETRY_FAILED_WIFI_EMERGENCY_CALL, false);
        sDefaults.putBoolean(KEY_ADDITIONAL_CALL_SETTING_BOOL, true);
        sDefaults.putBoolean(KEY_ALLOW_EMERGENCY_NUMBERS_IN_CALL_LOG_BOOL, false);
        sDefaults.putStringArray(KEY_UNLOGGABLE_NUMBERS_STRING_ARRAY, null);
        sDefaults.putBoolean(KEY_ALLOW_LOCAL_DTMF_TONES_BOOL, true);
        sDefaults.putBoolean(KEY_PLAY_CALL_RECORDING_TONE_BOOL, false);
        sDefaults.putBoolean(KEY_APN_EXPAND_BOOL, true);
        sDefaults.putBoolean(KEY_AUTO_RETRY_ENABLED_BOOL, false);
        sDefaults.putBoolean(KEY_CARRIER_SETTINGS_ENABLE_BOOL, false);
        sDefaults.putBoolean(KEY_CARRIER_VOLTE_AVAILABLE_BOOL, false);
        sDefaults.putBoolean(KEY_CARRIER_VT_AVAILABLE_BOOL, false);
        sDefaults.putBoolean(KEY_NOTIFY_HANDOVER_VIDEO_FROM_WIFI_TO_LTE_BOOL, false);
        sDefaults.putBoolean(KEY_NOTIFY_HANDOVER_VIDEO_FROM_LTE_TO_WIFI_BOOL, false);
        sDefaults.putBoolean(KEY_SUPPORT_DOWNGRADE_VT_TO_AUDIO_BOOL, true);
        sDefaults.putString(KEY_DEFAULT_VM_NUMBER_STRING, "");
        sDefaults.putString(KEY_DEFAULT_VM_NUMBER_ROAMING_STRING, "");
        sDefaults.putBoolean(KEY_CONFIG_TELEPHONY_USE_OWN_NUMBER_FOR_VOICEMAIL_BOOL, false);
        sDefaults.putBoolean(KEY_IGNORE_DATA_ENABLED_CHANGED_FOR_VIDEO_CALLS, true);
        sDefaults.putBoolean(KEY_VILTE_DATA_IS_METERED_BOOL, true);
        sDefaults.putBoolean(KEY_CARRIER_WFC_IMS_AVAILABLE_BOOL, false);
        sDefaults.putBoolean(KEY_CARRIER_WFC_SUPPORTS_WIFI_ONLY_BOOL, false);
        sDefaults.putBoolean(KEY_CARRIER_DEFAULT_WFC_IMS_ENABLED_BOOL, false);
        sDefaults.putBoolean(KEY_CARRIER_DEFAULT_WFC_IMS_ROAMING_ENABLED_BOOL, false);
        sDefaults.putBoolean(KEY_CARRIER_PROMOTE_WFC_ON_CALL_FAIL_BOOL, false);
        sDefaults.putInt(KEY_CARRIER_DEFAULT_WFC_IMS_MODE_INT, 2);
        sDefaults.putInt(KEY_CARRIER_DEFAULT_WFC_IMS_ROAMING_MODE_INT, 2);
        sDefaults.putBoolean(KEY_CARRIER_FORCE_DISABLE_ETWS_CMAS_TEST_BOOL, false);
        sDefaults.putBoolean(KEY_CARRIER_VOLTE_PROVISIONING_REQUIRED_BOOL, false);
        sDefaults.putBoolean(KEY_CARRIER_VOLTE_OVERRIDE_WFC_PROVISIONING_BOOL, false);
        sDefaults.putBoolean(KEY_CARRIER_VOLTE_TTY_SUPPORTED_BOOL, true);
        sDefaults.putBoolean(KEY_CARRIER_ALLOW_TURNOFF_IMS_BOOL, true);
        sDefaults.putBoolean(KEY_CARRIER_IMS_GBA_REQUIRED_BOOL, false);
        sDefaults.putBoolean(KEY_CARRIER_INSTANT_LETTERING_AVAILABLE_BOOL, false);
        sDefaults.putBoolean(KEY_CARRIER_USE_IMS_FIRST_FOR_EMERGENCY_BOOL, true);
        sDefaults.putString(KEY_CARRIER_NETWORK_SERVICE_WWAN_PACKAGE_OVERRIDE_STRING, "");
        sDefaults.putString(KEY_CARRIER_NETWORK_SERVICE_WLAN_PACKAGE_OVERRIDE_STRING, "");
        sDefaults.putString(KEY_CARRIER_DATA_SERVICE_WWAN_PACKAGE_OVERRIDE_STRING, "");
        sDefaults.putString(KEY_CARRIER_DATA_SERVICE_WLAN_PACKAGE_OVERRIDE_STRING, "");
        sDefaults.putString(KEY_CARRIER_INSTANT_LETTERING_INVALID_CHARS_STRING, "");
        sDefaults.putString(KEY_CARRIER_INSTANT_LETTERING_ESCAPED_CHARS_STRING, "");
        sDefaults.putString(KEY_CARRIER_INSTANT_LETTERING_ENCODING_STRING, "");
        sDefaults.putInt(KEY_CARRIER_INSTANT_LETTERING_LENGTH_LIMIT_INT, 64);
        sDefaults.putBoolean(KEY_DISABLE_CDMA_ACTIVATION_CODE_BOOL, false);
        sDefaults.putBoolean(KEY_DTMF_TYPE_ENABLED_BOOL, false);
        sDefaults.putBoolean(KEY_ENABLE_DIALER_KEY_VIBRATION_BOOL, true);
        sDefaults.putBoolean(KEY_HAS_IN_CALL_NOISE_SUPPRESSION_BOOL, false);
        sDefaults.putBoolean(KEY_HIDE_CARRIER_NETWORK_SETTINGS_BOOL, false);
        sDefaults.putBoolean(KEY_SIMPLIFIED_NETWORK_SETTINGS_BOOL, false);
        sDefaults.putBoolean(KEY_HIDE_SIM_LOCK_SETTINGS_BOOL, false);

        sDefaults.putBoolean(KEY_CARRIER_VOLTE_PROVISIONED_BOOL, false);
        sDefaults.putBoolean(KEY_CALL_BARRING_VISIBILITY_BOOL, false);
        sDefaults.putBoolean(KEY_CALL_BARRING_SUPPORTS_PASSWORD_CHANGE_BOOL, true);
        sDefaults.putBoolean(KEY_CALL_BARRING_SUPPORTS_DEACTIVATE_ALL_BOOL, true);
        sDefaults.putBoolean(KEY_CALL_FORWARDING_VISIBILITY_BOOL, true);
        sDefaults.putBoolean(KEY_ADDITIONAL_SETTINGS_CALLER_ID_VISIBILITY_BOOL, true);
        sDefaults.putBoolean(KEY_ADDITIONAL_SETTINGS_CALL_WAITING_VISIBILITY_BOOL, true);
        sDefaults.putBoolean(KEY_IGNORE_SIM_NETWORK_LOCKED_EVENTS_BOOL, false);
        sDefaults.putBoolean(KEY_MDN_IS_ADDITIONAL_VOICEMAIL_NUMBER_BOOL, false);
        sDefaults.putBoolean(KEY_OPERATOR_SELECTION_EXPAND_BOOL, true);
        sDefaults.putBoolean(KEY_PREFER_2G_BOOL, true);
        sDefaults.putBoolean(KEY_SHOW_APN_SETTING_CDMA_BOOL, false);
        sDefaults.putBoolean(KEY_SHOW_CDMA_CHOICES_BOOL, false);
        sDefaults.putBoolean(KEY_SMS_REQUIRES_DESTINATION_NUMBER_CONVERSION_BOOL, false);
        sDefaults.putBoolean(KEY_SHOW_ONSCREEN_DIAL_BUTTON_BOOL, true);
        sDefaults.putBoolean(KEY_SIM_NETWORK_UNLOCK_ALLOW_DISMISS_BOOL, true);
        sDefaults.putBoolean(KEY_SUPPORT_PAUSE_IMS_VIDEO_CALLS_BOOL, false);
        sDefaults.putBoolean(KEY_SUPPORT_SWAP_AFTER_MERGE_BOOL, true);
        sDefaults.putBoolean(KEY_USE_HFA_FOR_PROVISIONING_BOOL, false);
        sDefaults.putBoolean(KEY_EDITABLE_VOICEMAIL_NUMBER_SETTING_BOOL, true);
        sDefaults.putBoolean(KEY_EDITABLE_VOICEMAIL_NUMBER_BOOL, false);
        sDefaults.putBoolean(KEY_USE_OTASP_FOR_PROVISIONING_BOOL, false);
        sDefaults.putBoolean(KEY_VOICEMAIL_NOTIFICATION_PERSISTENT_BOOL, false);
        sDefaults.putBoolean(KEY_VOICE_PRIVACY_DISABLE_UI_BOOL, false);
        sDefaults.putBoolean(KEY_WORLD_PHONE_BOOL, false);
        sDefaults.putBoolean(KEY_REQUIRE_ENTITLEMENT_CHECKS_BOOL, true);
        sDefaults.putBoolean(KEY_RESTART_RADIO_ON_PDP_FAIL_REGULAR_DEACTIVATION_BOOL, false);
        sDefaults.putIntArray(KEY_RADIO_RESTART_FAILURE_CAUSES_INT_ARRAY, new int[]{});
        sDefaults.putInt(KEY_VOLTE_REPLACEMENT_RAT_INT, 0);
        sDefaults.putString(KEY_DEFAULT_SIM_CALL_MANAGER_STRING, "");
        sDefaults.putString(KEY_VVM_DESTINATION_NUMBER_STRING, "");
        sDefaults.putInt(KEY_VVM_PORT_NUMBER_INT, 0);
        sDefaults.putString(KEY_VVM_TYPE_STRING, "");
        sDefaults.putBoolean(KEY_VVM_CELLULAR_DATA_REQUIRED_BOOL, false);
        sDefaults.putString(KEY_VVM_CLIENT_PREFIX_STRING,"//VVM");
        sDefaults.putBoolean(KEY_VVM_SSL_ENABLED_BOOL,false);
        sDefaults.putStringArray(KEY_VVM_DISABLED_CAPABILITIES_STRING_ARRAY, null);
        sDefaults.putBoolean(KEY_VVM_LEGACY_MODE_ENABLED_BOOL,false);
        sDefaults.putBoolean(KEY_VVM_PREFETCH_BOOL, true);
        sDefaults.putString(KEY_CARRIER_VVM_PACKAGE_NAME_STRING, "");
        sDefaults.putStringArray(KEY_CARRIER_VVM_PACKAGE_NAME_STRING_ARRAY, null);
        sDefaults.putBoolean(KEY_SHOW_ICCID_IN_SIM_STATUS_BOOL, false);
        sDefaults.putBoolean(KEY_SHOW_SIGNAL_STRENGTH_IN_SIM_STATUS_BOOL, true);
        sDefaults.putBoolean(KEY_CI_ACTION_ON_SYS_UPDATE_BOOL, false);
        sDefaults.putString(KEY_CI_ACTION_ON_SYS_UPDATE_INTENT_STRING, "");
        sDefaults.putString(KEY_CI_ACTION_ON_SYS_UPDATE_EXTRA_STRING, "");
        sDefaults.putString(KEY_CI_ACTION_ON_SYS_UPDATE_EXTRA_VAL_STRING, "");
        sDefaults.putBoolean(KEY_CSP_ENABLED_BOOL, false);
        sDefaults.putBoolean(KEY_ALLOW_ADDING_APNS_BOOL, true);
        sDefaults.putStringArray(KEY_READ_ONLY_APN_TYPES_STRING_ARRAY, new String[] {"dun"});
        sDefaults.putStringArray(KEY_READ_ONLY_APN_FIELDS_STRING_ARRAY, null);
        sDefaults.putBoolean(KEY_BROADCAST_EMERGENCY_CALL_STATE_CHANGES_BOOL, false);
        sDefaults.putBoolean(KEY_ALWAYS_SHOW_EMERGENCY_ALERT_ONOFF_BOOL, false);
        sDefaults.putBoolean(KEY_DISABLE_SEVERE_WHEN_EXTREME_DISABLED_BOOL, true);
        sDefaults.putLong(KEY_MESSAGE_EXPIRATION_TIME_LONG, 86400000L);
        sDefaults.putStringArray(KEY_CARRIER_DATA_CALL_RETRY_CONFIG_STRINGS, new String[]{
                "default:default_randomization=2000,5000,10000,20000,40000,80000:5000,160000:5000,"
                        + "320000:5000,640000:5000,1280000:5000,1800000:5000",
                "mms:default_randomization=2000,5000,10000,20000,40000,80000:5000,160000:5000,"
                        + "320000:5000,640000:5000,1280000:5000,1800000:5000",
                "others:max_retries=3, 5000, 5000, 5000"});
        sDefaults.putLong(KEY_CARRIER_DATA_CALL_APN_DELAY_DEFAULT_LONG, 20000);
        sDefaults.putLong(KEY_CARRIER_DATA_CALL_APN_DELAY_FASTER_LONG, 3000);
        sDefaults.putLong(KEY_CARRIER_DATA_CALL_APN_RETRY_AFTER_DISCONNECT_LONG, 10000);
        sDefaults.putString(KEY_CARRIER_ERI_FILE_NAME_STRING, "eri.xml");
        sDefaults.putInt(KEY_DURATION_BLOCKING_DISABLED_AFTER_EMERGENCY_INT, 7200);
        sDefaults.putStringArray(KEY_CARRIER_METERED_APN_TYPES_STRINGS,
                new String[]{"default", "mms", "dun", "supl"});
        sDefaults.putStringArray(KEY_CARRIER_METERED_ROAMING_APN_TYPES_STRINGS,
                new String[]{"default", "mms", "dun", "supl"});
        // By default all APNs should be unmetered if the device is on IWLAN. However, we add
        // default APN as metered here as a workaround for P because in some cases, a data
        // connection was brought up on cellular, but later on the device camped on IWLAN. That
        // data connection was incorrectly treated as unmetered due to the current RAT IWLAN.
        // Marking it as metered for now can workaround the issue.
        // Todo: This will be fixed in Q when IWLAN full refactoring is completed.
        sDefaults.putStringArray(KEY_CARRIER_METERED_IWLAN_APN_TYPES_STRINGS,
                new String[]{"default"});

        sDefaults.putIntArray(KEY_ONLY_SINGLE_DC_ALLOWED_INT_ARRAY,
                new int[]{
                    4, /* IS95A */
                    5, /* IS95B */
                    6, /* 1xRTT */
                    7, /* EVDO_0 */
                    8, /* EVDO_A */
                    12 /* EVDO_B */
                });
        sDefaults.putStringArray(KEY_GSM_ROAMING_NETWORKS_STRING_ARRAY, null);
        sDefaults.putStringArray(KEY_GSM_NONROAMING_NETWORKS_STRING_ARRAY, null);
        sDefaults.putString(KEY_CONFIG_IMS_PACKAGE_OVERRIDE_STRING, null);
        sDefaults.putStringArray(KEY_CDMA_ROAMING_NETWORKS_STRING_ARRAY, null);
        sDefaults.putStringArray(KEY_CDMA_NONROAMING_NETWORKS_STRING_ARRAY, null);
        sDefaults.putStringArray(KEY_DIAL_STRING_REPLACE_STRING_ARRAY, null);
        sDefaults.putBoolean(KEY_FORCE_HOME_NETWORK_BOOL, false);
        sDefaults.putInt(KEY_GSM_DTMF_TONE_DELAY_INT, 0);
        sDefaults.putInt(KEY_IMS_DTMF_TONE_DELAY_INT, 0);
        sDefaults.putInt(KEY_CDMA_DTMF_TONE_DELAY_INT, 100);
        sDefaults.putBoolean(KEY_CALL_FORWARDING_MAP_NON_NUMBER_TO_VOICEMAIL_BOOL, false);
        sDefaults.putInt(KEY_CDMA_3WAYCALL_FLASH_DELAY_INT , 0);
        sDefaults.putBoolean(KEY_SUPPORT_CONFERENCE_CALL_BOOL, true);
        sDefaults.putBoolean(KEY_SUPPORT_IMS_CONFERENCE_CALL_BOOL, true);
        sDefaults.putBoolean(KEY_SUPPORT_MANAGE_IMS_CONFERENCE_CALL_BOOL, true);
        sDefaults.putBoolean(KEY_SUPPORT_VIDEO_CONFERENCE_CALL_BOOL, false);
        sDefaults.putBoolean(KEY_IS_IMS_CONFERENCE_SIZE_ENFORCED_BOOL, false);
        sDefaults.putInt(KEY_IMS_CONFERENCE_SIZE_LIMIT_INT, 5);
        sDefaults.putBoolean(KEY_DISPLAY_HD_AUDIO_PROPERTY_BOOL, true);
        sDefaults.putBoolean(KEY_EDITABLE_ENHANCED_4G_LTE_BOOL, true);
        sDefaults.putBoolean(KEY_HIDE_ENHANCED_4G_LTE_BOOL, false);
        sDefaults.putBoolean(KEY_ENHANCED_4G_LTE_ON_BY_DEFAULT_BOOL, true);
        sDefaults.putBoolean(KEY_HIDE_IMS_APN_BOOL, false);
        sDefaults.putBoolean(KEY_HIDE_PREFERRED_NETWORK_TYPE_BOOL, false);
        sDefaults.putBoolean(KEY_ALLOW_EMERGENCY_VIDEO_CALLS_BOOL, false);
        sDefaults.putStringArray(KEY_ENABLE_APPS_STRING_ARRAY, null);
        sDefaults.putBoolean(KEY_EDITABLE_WFC_MODE_BOOL, true);
        sDefaults.putStringArray(KEY_WFC_OPERATOR_ERROR_CODES_STRING_ARRAY, null);
        sDefaults.putInt(KEY_WFC_SPN_FORMAT_IDX_INT, 0);
        sDefaults.putInt(KEY_WFC_DATA_SPN_FORMAT_IDX_INT, 0);
        sDefaults.putString(KEY_WFC_EMERGENCY_ADDRESS_CARRIER_APP_STRING, "");
        sDefaults.putBoolean(KEY_CONFIG_WIFI_DISABLE_IN_ECBM, false);
        sDefaults.putBoolean(KEY_CARRIER_NAME_OVERRIDE_BOOL, false);
        sDefaults.putString(KEY_CARRIER_NAME_STRING, "");
        sDefaults.putBoolean(KEY_CDMA_HOME_REGISTERED_PLMN_NAME_OVERRIDE_BOOL, false);
        sDefaults.putString(KEY_CDMA_HOME_REGISTERED_PLMN_NAME_STRING, "");
        sDefaults.putBoolean(KEY_SUPPORT_DIRECT_FDN_DIALING_BOOL, false);
        sDefaults.putBoolean(KEY_CARRIER_DEFAULT_DATA_ROAMING_ENABLED_BOOL, false);
        sDefaults.putBoolean(KEY_SKIP_CF_FAIL_TO_DISABLE_DIALOG_BOOL, false);
        sDefaults.putBoolean(KEY_SUPPORT_ENHANCED_CALL_BLOCKING_BOOL, false);

        // MMS defaults
        sDefaults.putBoolean(KEY_MMS_ALIAS_ENABLED_BOOL, false);
        sDefaults.putBoolean(KEY_MMS_ALLOW_ATTACH_AUDIO_BOOL, true);
        sDefaults.putBoolean(KEY_MMS_APPEND_TRANSACTION_ID_BOOL, false);
        sDefaults.putBoolean(KEY_MMS_GROUP_MMS_ENABLED_BOOL, true);
        sDefaults.putBoolean(KEY_MMS_MMS_DELIVERY_REPORT_ENABLED_BOOL, false);
        sDefaults.putBoolean(KEY_MMS_MMS_ENABLED_BOOL, true);
        sDefaults.putBoolean(KEY_MMS_MMS_READ_REPORT_ENABLED_BOOL, false);
        sDefaults.putBoolean(KEY_MMS_MULTIPART_SMS_ENABLED_BOOL, true);
        sDefaults.putBoolean(KEY_MMS_NOTIFY_WAP_MMSC_ENABLED_BOOL, false);
        sDefaults.putBoolean(KEY_MMS_SEND_MULTIPART_SMS_AS_SEPARATE_MESSAGES_BOOL, false);
        sDefaults.putBoolean(KEY_MMS_SHOW_CELL_BROADCAST_APP_LINKS_BOOL, true);
        sDefaults.putBoolean(KEY_MMS_SMS_DELIVERY_REPORT_ENABLED_BOOL, true);
        sDefaults.putBoolean(KEY_MMS_SUPPORT_HTTP_CHARSET_HEADER_BOOL, false);
        sDefaults.putBoolean(KEY_MMS_SUPPORT_MMS_CONTENT_DISPOSITION_BOOL, true);
        sDefaults.putBoolean(KEY_MMS_CLOSE_CONNECTION_BOOL, false);
        sDefaults.putInt(KEY_MMS_ALIAS_MAX_CHARS_INT, 48);
        sDefaults.putInt(KEY_MMS_ALIAS_MIN_CHARS_INT, 2);
        sDefaults.putInt(KEY_MMS_HTTP_SOCKET_TIMEOUT_INT, 60 * 1000);
        sDefaults.putInt(KEY_MMS_MAX_IMAGE_HEIGHT_INT, 480);
        sDefaults.putInt(KEY_MMS_MAX_IMAGE_WIDTH_INT, 640);
        sDefaults.putInt(KEY_MMS_MAX_MESSAGE_SIZE_INT, 300 * 1024);
        sDefaults.putInt(KEY_MMS_MESSAGE_TEXT_MAX_SIZE_INT, -1);
        sDefaults.putInt(KEY_MMS_RECIPIENT_LIMIT_INT, Integer.MAX_VALUE);
        sDefaults.putInt(KEY_MMS_SMS_TO_MMS_TEXT_LENGTH_THRESHOLD_INT, -1);
        sDefaults.putInt(KEY_MMS_SMS_TO_MMS_TEXT_THRESHOLD_INT, -1);
        sDefaults.putInt(KEY_MMS_SUBJECT_MAX_LENGTH_INT, 40);
        sDefaults.putString(KEY_MMS_EMAIL_GATEWAY_NUMBER_STRING, "");
        sDefaults.putString(KEY_MMS_HTTP_PARAMS_STRING, "");
        sDefaults.putString(KEY_MMS_NAI_SUFFIX_STRING, "");
        sDefaults.putString(KEY_MMS_UA_PROF_TAG_NAME_STRING, "x-wap-profile");
        sDefaults.putString(KEY_MMS_UA_PROF_URL_STRING, "");
        sDefaults.putString(KEY_MMS_USER_AGENT_STRING, "");
        sDefaults.putBoolean(KEY_ALLOW_NON_EMERGENCY_CALLS_IN_ECM_BOOL, true);
        sDefaults.putBoolean(KEY_USE_RCS_PRESENCE_BOOL, false);
        sDefaults.putBoolean(KEY_FORCE_IMEI_BOOL, false);
        sDefaults.putInt(
                KEY_CDMA_ROAMING_MODE_INT, TelephonyManager.CDMA_ROAMING_MODE_RADIO_DEFAULT);
        sDefaults.putString(KEY_RCS_CONFIG_SERVER_URL_STRING, "");

        // Carrier Signalling Receivers
        sDefaults.putString(KEY_CARRIER_SETUP_APP_STRING, "");
        sDefaults.putStringArray(KEY_CARRIER_APP_WAKE_SIGNAL_CONFIG_STRING_ARRAY,
                new String[]{
                        "com.android.carrierdefaultapp/.CarrierDefaultBroadcastReceiver:"
                                + "com.android.internal.telephony.CARRIER_SIGNAL_RESET"
                });
        sDefaults.putStringArray(KEY_CARRIER_APP_NO_WAKE_SIGNAL_CONFIG_STRING_ARRAY, null);


        // Default carrier app configurations
        sDefaults.putStringArray(KEY_CARRIER_DEFAULT_ACTIONS_ON_REDIRECTION_STRING_ARRAY,
                new String[]{
                        "9, 4, 1"
                        //9: CARRIER_ACTION_REGISTER_NETWORK_AVAIL
                        //4: CARRIER_ACTION_DISABLE_METERED_APNS
                        //1: CARRIER_ACTION_SHOW_PORTAL_NOTIFICATION
                });
        sDefaults.putStringArray(KEY_CARRIER_DEFAULT_ACTIONS_ON_RESET, new String[]{
                "6, 8"
                //6: CARRIER_ACTION_CANCEL_ALL_NOTIFICATIONS
                //8: CARRIER_ACTION_DISABLE_DEFAULT_URL_HANDLER
                });
        sDefaults.putStringArray(KEY_CARRIER_DEFAULT_ACTIONS_ON_DEFAULT_NETWORK_AVAILABLE,
                new String[] {
                        String.valueOf(false) + ": 7",
                        //7: CARRIER_ACTION_ENABLE_DEFAULT_URL_HANDLER
                        String.valueOf(true) + ": 8"
                        //8: CARRIER_ACTION_DISABLE_DEFAULT_URL_HANDLER
                });
        sDefaults.putStringArray(KEY_CARRIER_DEFAULT_REDIRECTION_URL_STRING_ARRAY, null);

        sDefaults.putInt(KEY_MONTHLY_DATA_CYCLE_DAY_INT, DATA_CYCLE_USE_PLATFORM_DEFAULT);
        sDefaults.putLong(KEY_DATA_WARNING_THRESHOLD_BYTES_LONG, DATA_CYCLE_USE_PLATFORM_DEFAULT);
        sDefaults.putBoolean(KEY_DATA_WARNING_NOTIFICATION_BOOL, true);
        sDefaults.putLong(KEY_DATA_LIMIT_THRESHOLD_BYTES_LONG, DATA_CYCLE_USE_PLATFORM_DEFAULT);
        sDefaults.putBoolean(KEY_DATA_LIMIT_NOTIFICATION_BOOL, true);
        sDefaults.putBoolean(KEY_DATA_RAPID_NOTIFICATION_BOOL, true);

        // Rat families: {GPRS, EDGE}, {EVDO, EVDO_A, EVDO_B}, {UMTS, HSPA, HSDPA, HSUPA, HSPAP},
        // {LTE, LTE_CA}
        // Order is important - lowest precidence first
        sDefaults.putStringArray(KEY_RATCHET_RAT_FAMILIES,
                new String[]{"1,2","7,8,12","3,11,9,10,15","14,19"});
        sDefaults.putBoolean(KEY_TREAT_DOWNGRADED_VIDEO_CALLS_AS_VIDEO_CALLS_BOOL, false);
        sDefaults.putBoolean(KEY_DROP_VIDEO_CALL_WHEN_ANSWERING_AUDIO_CALL_BOOL, false);
        sDefaults.putBoolean(KEY_ALLOW_MERGE_WIFI_CALLS_WHEN_VOWIFI_OFF_BOOL, true);
        sDefaults.putBoolean(KEY_ALLOW_ADD_CALL_DURING_VIDEO_CALL_BOOL, true);
        sDefaults.putBoolean(KEY_WIFI_CALLS_CAN_BE_HD_AUDIO, true);
        sDefaults.putBoolean(KEY_VIDEO_CALLS_CAN_BE_HD_AUDIO, true);
        sDefaults.putBoolean(KEY_GSM_CDMA_CALLS_CAN_BE_HD_AUDIO, false);
        sDefaults.putBoolean(KEY_ALLOW_VIDEO_CALLING_FALLBACK_BOOL, true);

        sDefaults.putStringArray(KEY_IMS_REASONINFO_MAPPING_STRING_ARRAY, null);
        sDefaults.putBoolean(KEY_ENHANCED_4G_LTE_TITLE_VARIANT_BOOL, false);
        sDefaults.putInt(KEY_ENHANCED_4G_LTE_TITLE_VARIANT_INT, 0);
        sDefaults.putBoolean(KEY_NOTIFY_VT_HANDOVER_TO_WIFI_FAILURE_BOOL, false);
        sDefaults.putStringArray(KEY_FILTERED_CNAP_NAMES_STRING_ARRAY, null);
        sDefaults.putBoolean(KEY_EDITABLE_WFC_ROAMING_MODE_BOOL, false);
        sDefaults.putBoolean(KEY_STK_DISABLE_LAUNCH_BROWSER_BOOL, false);
        sDefaults.putBoolean(KEY_PERSIST_LPP_MODE_BOOL, true);
        sDefaults.putStringArray(KEY_CARRIER_WIFI_STRING_ARRAY, null);
        sDefaults.putInt(KEY_PREF_NETWORK_NOTIFICATION_DELAY_INT, -1);
        sDefaults.putInt(KEY_EMERGENCY_NOTIFICATION_DELAY_INT, -1);
        sDefaults.putBoolean(KEY_ALLOW_USSD_REQUESTS_VIA_TELEPHONY_MANAGER_BOOL, true);
        sDefaults.putBoolean(KEY_SUPPORT_3GPP_CALL_FORWARDING_WHILE_ROAMING_BOOL, true);
        sDefaults.putBoolean(KEY_DISPLAY_VOICEMAIL_NUMBER_AS_DEFAULT_CALL_FORWARDING_NUMBER_BOOL,
                false);
        sDefaults.putBoolean(KEY_NOTIFY_INTERNATIONAL_CALL_ON_WFC_BOOL, false);
        sDefaults.putBoolean(KEY_SHOW_VIDEO_CALL_CHARGES_ALERT_DIALOG_BOOL, false);
        sDefaults.putStringArray(KEY_CALL_FORWARDING_BLOCKS_WHILE_ROAMING_STRING_ARRAY,
                null);
        sDefaults.putInt(KEY_LTE_EARFCNS_RSRP_BOOST_INT, 0);
        sDefaults.putStringArray(KEY_BOOSTED_LTE_EARFCNS_STRING_ARRAY, null);
        sDefaults.putBoolean(KEY_USE_ONLY_RSRP_FOR_LTE_SIGNAL_BAR_BOOL, false);
        sDefaults.putBoolean(KEY_DISABLE_VOICE_BARRING_NOTIFICATION_BOOL, false);
        sDefaults.putInt(IMSI_KEY_AVAILABILITY_INT, 0);
        sDefaults.putString(IMSI_KEY_DOWNLOAD_URL_STRING, null);
        sDefaults.putBoolean(KEY_CONVERT_CDMA_CALLER_ID_MMI_CODES_WHILE_ROAMING_ON_3GPP_BOOL,
                false);
        sDefaults.putStringArray(KEY_NON_ROAMING_OPERATOR_STRING_ARRAY, null);
        sDefaults.putStringArray(KEY_ROAMING_OPERATOR_STRING_ARRAY, null);
        sDefaults.putBoolean(KEY_SHOW_IMS_REGISTRATION_STATUS_BOOL, false);
        sDefaults.putBoolean(KEY_RTT_SUPPORTED_BOOL, false);
        sDefaults.putBoolean(KEY_DISABLE_CHARGE_INDICATION_BOOL, false);
        sDefaults.putStringArray(KEY_FEATURE_ACCESS_CODES_STRING_ARRAY, null);
        sDefaults.putBoolean(KEY_IDENTIFY_HIGH_DEFINITION_CALLS_IN_CALL_LOG_BOOL, false);
        sDefaults.putBoolean(KEY_SHOW_PRECISE_FAILED_CAUSE_BOOL, false);
        sDefaults.putBoolean(KEY_SPN_DISPLAY_RULE_USE_ROAMING_FROM_SERVICE_STATE_BOOL, false);
        sDefaults.putBoolean(KEY_ALWAYS_SHOW_DATA_RAT_ICON_BOOL, false);
        sDefaults.putBoolean(KEY_CARRIER_CONFIG_APPLIED_BOOL, false);
        sDefaults.putBoolean(KEY_CHECK_PRICING_WITH_CARRIER_FOR_DATA_ROAMING_BOOL, false);
        sDefaults.putIntArray(KEY_LTE_RSRP_THRESHOLDS_INT_ARRAY,
                new int[] {
                        -128, /* SIGNAL_STRENGTH_POOR */
                        -118, /* SIGNAL_STRENGTH_MODERATE */
                        -108, /* SIGNAL_STRENGTH_GOOD */
                        -98,  /* SIGNAL_STRENGTH_GREAT */
                });
        sDefaults.putIntArray(KEY_WCDMA_RSCP_THRESHOLDS_INT_ARRAY,
                new int[] {
                        -115,  /* SIGNAL_STRENGTH_POOR */
                        -105, /* SIGNAL_STRENGTH_MODERATE */
                        -95, /* SIGNAL_STRENGTH_GOOD */
                        -85  /* SIGNAL_STRENGTH_GREAT */
                });
        sDefaults.putString(KEY_WCDMA_DEFAULT_SIGNAL_STRENGTH_MEASUREMENT_STRING, "");
    }

    
Gets the configuration values for a particular subscription, which is associated with a specific SIM card. If an invalid subId is used, the returned config will contain default values. After using this method to get the configuration bundle, isConfigForIdentifiedCarrier(PersistableBundle) should be called to confirm whether any carrier specific configuration has been applied. 
Requires Permission: READ_PHONE_STATE 
Params:
subId – the subscription ID, normally obtained from SubscriptionManager.
Returns:
A PersistableBundle containing the config for the given subId, or default values for an invalid subId./**
     * Gets the configuration values for a particular subscription, which is associated with a
     * specific SIM card. If an invalid subId is used, the returned config will contain default
     * values. After using this method to get the configuration bundle,
     * {@link #isConfigForIdentifiedCarrier(PersistableBundle)} should be called to confirm whether
     * any carrier specific configuration has been applied.
     *
     * <p>Requires Permission:
     * {@link android.Manifest.permission#READ_PHONE_STATE READ_PHONE_STATE}
     *
     * @param subId the subscription ID, normally obtained from {@link SubscriptionManager}.
     * @return A {@link PersistableBundle} containing the config for the given subId, or default
     *         values for an invalid subId.
     */
    @Nullable
    public PersistableBundle getConfigForSubId(int subId) {
        try {
            ICarrierConfigLoader loader = getICarrierConfigLoader();
            if (loader == null) {
                Rlog.w(TAG, "Error getting config for subId " + subId
                        + " ICarrierConfigLoader is null");
                return null;
            }
            return loader.getConfigForSubId(subId);
        } catch (RemoteException ex) {
            Rlog.e(TAG, "Error getting config for subId " + subId + ": "
                    + ex.toString());
        }
        return null;
    }

    
Gets the configuration values for the default subscription. After using this method to get the configuration bundle, isConfigForIdentifiedCarrier(PersistableBundle) should be called to confirm whether any carrier specific configuration has been applied. 
Requires Permission: READ_PHONE_STATE 
See Also:
getConfigForSubId/**
     * Gets the configuration values for the default subscription. After using this method to get
     * the configuration bundle, {@link #isConfigForIdentifiedCarrier(PersistableBundle)} should be
     * called to confirm whether any carrier specific configuration has been applied.
     *
     * <p>Requires Permission:
     * {@link android.Manifest.permission#READ_PHONE_STATE READ_PHONE_STATE}
     *
     * @see #getConfigForSubId
     */
    @Nullable
    public PersistableBundle getConfig() {
        return getConfigForSubId(SubscriptionManager.getDefaultSubscriptionId());
    }

    
Determines whether a configuration PersistableBundle obtained from getConfig() or getConfigForSubId(int) corresponds to an identified carrier. 
 When an app receives the ACTION_CARRIER_CONFIG_CHANGED broadcast which informs it that the carrier configuration has changed, it is possible that another reload of the carrier configuration has begun since the intent was sent. In this case, the carrier configuration the app fetches (e.g. via getConfig()) may not represent the configuration for the current carrier. It should be noted that it does not necessarily mean the configuration belongs to current carrier when this function return true because it may belong to another previous identified carrier. Users should always call getConfig() or getConfigForSubId(int) after receiving the broadcast ACTION_CARRIER_CONFIG_CHANGED. 
 After using getConfig() or getConfigForSubId(int) an app should always use this method to confirm whether any carrier specific configuration has been applied. Especially when an app misses the broadcast ACTION_CARRIER_CONFIG_CHANGED but it still needs to get the current configuration, it must use this method to verify whether the configuration is default or carrier overridden. 
Params:
bundle – the configuration bundle to be checked.
Returns:
boolean true if any carrier specific configuration bundle has been applied, false
otherwise or the bundle is null./**
     * Determines whether a configuration {@link PersistableBundle} obtained from
     * {@link #getConfig()} or {@link #getConfigForSubId(int)} corresponds to an identified carrier.
     * <p>
     * When an app receives the {@link CarrierConfigManager#ACTION_CARRIER_CONFIG_CHANGED}
     * broadcast which informs it that the carrier configuration has changed, it is possible
     * that another reload of the carrier configuration has begun since the intent was sent.
     * In this case, the carrier configuration the app fetches (e.g. via {@link #getConfig()})
     * may not represent the configuration for the current carrier. It should be noted that it
     * does not necessarily mean the configuration belongs to current carrier when this function
     * return true because it may belong to another previous identified carrier. Users should
     * always call {@link #getConfig()} or {@link #getConfigForSubId(int)} after receiving the
     * broadcast {@link #ACTION_CARRIER_CONFIG_CHANGED}.
     * </p>
     * <p>
     * After using {@link #getConfig()} or {@link #getConfigForSubId(int)} an app should always
     * use this method to confirm whether any carrier specific configuration has been applied.
     * Especially when an app misses the broadcast {@link #ACTION_CARRIER_CONFIG_CHANGED} but it
     * still needs to get the current configuration, it must use this method to verify whether the
     * configuration is default or carrier overridden.
     * </p>
     *
     * @param bundle the configuration bundle to be checked.
     * @return boolean true if any carrier specific configuration bundle has been applied, false
     * otherwise or the bundle is null.
     */
    public static boolean isConfigForIdentifiedCarrier(PersistableBundle bundle) {
        return bundle != null && bundle.getBoolean(KEY_CARRIER_CONFIG_APPLIED_BOOL);
    }

    
Calling this method triggers telephony services to fetch the current carrier configuration.

Normally this does not need to be called because the platform reloads config on its own.
This should be called by a carrier service app if it wants to update config at an arbitrary
moment.

Requires that the calling app has carrier privileges.
 This method returns before the reload has completed, and CarrierService.onLoadConfig will be called from an arbitrary thread. 
See Also:
TelephonyManager.hasCarrierPrivileges/**
     * Calling this method triggers telephony services to fetch the current carrier configuration.
     * <p>
     * Normally this does not need to be called because the platform reloads config on its own.
     * This should be called by a carrier service app if it wants to update config at an arbitrary
     * moment.
     * </p>
     * <p>Requires that the calling app has carrier privileges.
     * <p>
     * This method returns before the reload has completed, and
     * {@link android.service.carrier.CarrierService#onLoadConfig} will be called from an
     * arbitrary thread.
     * </p>
     * @see TelephonyManager#hasCarrierPrivileges
     */
    public void notifyConfigChangedForSubId(int subId) {
        try {
            ICarrierConfigLoader loader = getICarrierConfigLoader();
            if (loader == null) {
                Rlog.w(TAG, "Error reloading config for subId=" + subId
                        + " ICarrierConfigLoader is null");
                return;
            }
            loader.notifyConfigChangedForSubId(subId);
        } catch (RemoteException ex) {
            Rlog.e(TAG, "Error reloading config for subId=" + subId + ": " + ex.toString());
        }
    }

    
Request the carrier config loader to update the cofig for phoneId.

Depending on simState, the config may be cleared or loaded from config app. This is only used
by SubscriptionInfoUpdater.

@hide
/**
     * Request the carrier config loader to update the cofig for phoneId.
     * <p>
     * Depending on simState, the config may be cleared or loaded from config app. This is only used
     * by SubscriptionInfoUpdater.
     * </p>
     *
     * @hide
     */
    @SystemApi
    @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE)
    public void updateConfigForPhoneId(int phoneId, String simState) {
        try {
            ICarrierConfigLoader loader = getICarrierConfigLoader();
            if (loader == null) {
                Rlog.w(TAG, "Error updating config for phoneId=" + phoneId
                        + " ICarrierConfigLoader is null");
                return;
            }
            loader.updateConfigForPhoneId(phoneId, simState);
        } catch (RemoteException ex) {
            Rlog.e(TAG, "Error updating config for phoneId=" + phoneId + ": " + ex.toString());
        }
    }

    
{@hide} /** {@hide} */
    public String getDefaultCarrierServicePackageName() {
        try {
            return getICarrierConfigLoader().getDefaultCarrierServicePackageName();
        } catch (Throwable t) {
            return null;
        }
    }

    
Returns a new bundle with the default value for every supported configuration variable.
@hide
/**
     * Returns a new bundle with the default value for every supported configuration variable.
     *
     * @hide
     */
    @NonNull
    @SystemApi
    @SuppressLint("Doclava125")
    public static PersistableBundle getDefaultConfig() {
        return new PersistableBundle(sDefaults);
    }

    
@hide
/** @hide */
    @Nullable
    private ICarrierConfigLoader getICarrierConfigLoader() {
        return ICarrierConfigLoader.Stub
                .asInterface(ServiceManager.getService(Context.CARRIER_CONFIG_SERVICE));
    }
}