Merge "Updating the APIs for the Callback Mode" into main

8 files changed, 240 insertions, 81 deletions

diff --git a/core/api/system-current.txt b/core/api/system-current.txt
index 10206f245c8a..49b711b8b013 100644
--- a/core/api/system-current.txt
+++ b/core/api/system-current.txt
@@ -15426,6 +15426,7 @@ package android.telephony {
     field public static final int EVENT_DATA_CONNECTION_STATE_CHANGED = 7; // 0x7
     field @RequiresPermission(android.Manifest.permission.READ_PRECISE_PHONE_STATE) public static final int EVENT_DATA_ENABLED_CHANGED = 34; // 0x22
     field public static final int EVENT_DISPLAY_INFO_CHANGED = 21; // 0x15
+    field @FlaggedApi("com.android.internal.telephony.flags.emergency_callback_mode_notification") @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public static final int EVENT_EMERGENCY_CALLBACK_MODE_CHANGED = 40; // 0x28
     field @RequiresPermission(android.Manifest.permission.READ_PHONE_STATE) public static final int EVENT_EMERGENCY_NUMBER_LIST_CHANGED = 25; // 0x19
     field @RequiresPermission(android.Manifest.permission.READ_PRECISE_PHONE_STATE) public static final int EVENT_IMS_CALL_DISCONNECT_CAUSE_CHANGED = 28; // 0x1c
     field @RequiresPermission(android.Manifest.permission.READ_CALL_LOG) public static final int EVENT_LEGACY_CALL_STATE_CHANGED = 36; // 0x24
@@ -15463,6 +15464,12 @@ package android.telephony {
     method @RequiresPermission(android.Manifest.permission.READ_PRECISE_PHONE_STATE) public void onDataEnabledChanged(boolean, int);
   }
 
+  @FlaggedApi("com.android.internal.telephony.flags.emergency_callback_mode_notification") public static interface TelephonyCallback.EmergencyCallbackModeListener {
+    method @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public void onCallbackModeRestarted(int, @NonNull java.time.Duration, int);
+    method @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public void onCallbackModeStarted(int, @NonNull java.time.Duration, int);
+    method @RequiresPermission(android.Manifest.permission.READ_PRIVILEGED_PHONE_STATE) public void onCallbackModeStopped(int, int, int);
+  }
+
   public static interface TelephonyCallback.LinkCapacityEstimateChangedListener {
     method @RequiresPermission(android.Manifest.permission.READ_PRECISE_PHONE_STATE) public void onLinkCapacityEstimateChanged(@NonNull java.util.List<android.telephony.LinkCapacityEstimate>);
   }
@@ -15724,6 +15731,8 @@ package android.telephony {
     field public static final int CELL_BROADCAST_RESULT_SUCCESS = 0; // 0x0
     field public static final int CELL_BROADCAST_RESULT_UNKNOWN = -1; // 0xffffffff
     field public static final int CELL_BROADCAST_RESULT_UNSUPPORTED = 1; // 0x1
+    field @FlaggedApi("com.android.internal.telephony.flags.emergency_callback_mode_notification") public static final int EMERGENCY_CALLBACK_MODE_CALL = 1; // 0x1
+    field @FlaggedApi("com.android.internal.telephony.flags.emergency_callback_mode_notification") public static final int EMERGENCY_CALLBACK_MODE_SMS = 2; // 0x2
     field public static final int ENABLE_NR_DUAL_CONNECTIVITY_INVALID_STATE = 4; // 0x4
     field public static final int ENABLE_NR_DUAL_CONNECTIVITY_NOT_SUPPORTED = 1; // 0x1
     field public static final int ENABLE_NR_DUAL_CONNECTIVITY_RADIO_ERROR = 3; // 0x3
@@ -15781,6 +15790,13 @@ package android.telephony {
     field public static final int SRVCC_STATE_HANDOVER_FAILED = 2; // 0x2
     field public static final int SRVCC_STATE_HANDOVER_NONE = -1; // 0xffffffff
     field public static final int SRVCC_STATE_HANDOVER_STARTED = 0; // 0x0
+    field @FlaggedApi("com.android.internal.telephony.flags.emergency_callback_mode_notification") public static final int STOP_REASON_EMERGENCY_SMS_SENT = 4; // 0x4
+    field @FlaggedApi("com.android.internal.telephony.flags.emergency_callback_mode_notification") public static final int STOP_REASON_NORMAL_SMS_SENT = 2; // 0x2
+    field @FlaggedApi("com.android.internal.telephony.flags.emergency_callback_mode_notification") public static final int STOP_REASON_OUTGOING_EMERGENCY_CALL_INITIATED = 3; // 0x3
+    field @FlaggedApi("com.android.internal.telephony.flags.emergency_callback_mode_notification") public static final int STOP_REASON_OUTGOING_NORMAL_CALL_INITIATED = 1; // 0x1
+    field @FlaggedApi("com.android.internal.telephony.flags.emergency_callback_mode_notification") public static final int STOP_REASON_TIMER_EXPIRED = 5; // 0x5
+    field @FlaggedApi("com.android.internal.telephony.flags.emergency_callback_mode_notification") public static final int STOP_REASON_UNKNOWN = 0; // 0x0
+    field @FlaggedApi("com.android.internal.telephony.flags.emergency_callback_mode_notification") public static final int STOP_REASON_USER_ACTION = 6; // 0x6
     field public static final int THERMAL_MITIGATION_RESULT_INVALID_STATE = 3; // 0x3
     field public static final int THERMAL_MITIGATION_RESULT_MODEM_ERROR = 1; // 0x1
     field public static final int THERMAL_MITIGATION_RESULT_MODEM_NOT_AVAILABLE = 2; // 0x2
diff --git a/core/java/android/telephony/PhoneStateListener.java b/core/java/android/telephony/PhoneStateListener.java
index 5ac0c50a312e..e8ef9d65a2b4 100644
--- a/core/java/android/telephony/PhoneStateListener.java
+++ b/core/java/android/telephony/PhoneStateListener.java
@@ -1671,14 +1671,22 @@ public class PhoneStateListener {
         }
 
         /** @hide */
-        public final void onCallBackModeStarted(
-                @TelephonyManager.EmergencyCallbackModeType int type) {
+        public final void onCallbackModeStarted(
+                @TelephonyManager.EmergencyCallbackModeType int type, long durationMillis,
+                int subId) {
             // not support. Can't override. Use TelephonyCallback.
         }
 
         /** @hide */
-        public final void onCallBackModeStopped(@EmergencyCallbackModeType int type,
-                @EmergencyCallbackModeStopReason int reason) {
+        public final void onCallbackModeRestarted(
+                @TelephonyManager.EmergencyCallbackModeType int type, long durationMillis,
+                int subId) {
+            // not support. Can't override. Use TelephonyCallback.
+        }
+
+        /** @hide */
+        public final void onCallbackModeStopped(@EmergencyCallbackModeType int type,
+                @EmergencyCallbackModeStopReason int reason, int subId) {
             // not support. Can't override. Use TelephonyCallback.
         }
 
diff --git a/core/java/android/telephony/TelephonyCallback.java b/core/java/android/telephony/TelephonyCallback.java
index c360e64c8c1a..14d5800e4db7 100644
--- a/core/java/android/telephony/TelephonyCallback.java
+++ b/core/java/android/telephony/TelephonyCallback.java
@@ -41,6 +41,7 @@ import dalvik.system.VMRuntime;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.lang.ref.WeakReference;
+import java.time.Duration;
 import java.util.Arrays;
 import java.util.List;
 import java.util.Map;
@@ -619,16 +620,20 @@ public class TelephonyCallback {
 
 
     /**
-     * Event for changes to the Emergency callback mode
+     * Event for changes to the emergency callback mode
      *
      * <p>Requires permission {@link android.Manifest.permission#READ_PRIVILEGED_PHONE_STATE}
      *
-     * @see EmergencyCallbackModeListener#onCallbackModeStarted(int)
-     * @see EmergencyCallbackModeListener#onCallbackModeStopped(int, int)
+     * @see EmergencyCallbackModeListener#onCallbackModeStarted(int, Duration, int)
+     * @see EmergencyCallbackModeListener#onCallbackModeRestarted(int, Duration, int)
+     * @see EmergencyCallbackModeListener#onCallbackModeStopped(int, int, int)
      *
      * @hide
      */
+
+    @FlaggedApi(Flags.FLAG_EMERGENCY_CALLBACK_MODE_NOTIFICATION)
     @RequiresPermission(Manifest.permission.READ_PRIVILEGED_PHONE_STATE)
+    @SystemApi
     public static final int EVENT_EMERGENCY_CALLBACK_MODE_CHANGED = 40;
 
     /**
@@ -1671,39 +1676,64 @@ public class TelephonyCallback {
     }
 
     /**
-     * Interface for emergency callback mode listener.
+     * Interface for the emergency callback mode listener.
      *
      * @hide
      */
+    @FlaggedApi(Flags.FLAG_EMERGENCY_CALLBACK_MODE_NOTIFICATION)
+    @SystemApi
     public interface EmergencyCallbackModeListener {
         /**
-         * Indicates that Callback Mode has been started.
+         * Indicates that emergency callback mode has been started.
          * <p>
-         * This method will be called when an emergency sms/emergency call is sent
-         * and the callback mode is supported by the carrier.
-         * If an emergency SMS is transmitted during callback mode for SMS, this API will be called
-         * once again with TelephonyManager#EMERGENCY_CALLBACK_MODE_SMS.
+         * This method will be called when an emergency SMS or emergency call is ended and
+         * the emergency callback mode is supported by the carrier.
+         * If the emergency callback mode was started for an emergency call and an emergency SMS is
+         * transmitted during callback mode for SMS then this API will be called once again with
+         * TelephonyManager#EMERGENCY_CALLBACK_MODE_SMS.
          *
-         * @param type for callback mode entry
+         * @param type for the emergency callback mode entry
          *             See {@link TelephonyManager.EmergencyCallbackModeType}.
          * @see TelephonyManager#EMERGENCY_CALLBACK_MODE_CALL
          * @see TelephonyManager#EMERGENCY_CALLBACK_MODE_SMS
+         *
+         * @param timerDuration is the time remaining in the emergency callback mode.
+         * @param subId The subscription ID used to start the emergency callback mode.
          */
         @RequiresPermission(Manifest.permission.READ_PRIVILEGED_PHONE_STATE)
-        void onCallBackModeStarted(@TelephonyManager.EmergencyCallbackModeType int type);
+        void onCallbackModeStarted(@TelephonyManager.EmergencyCallbackModeType int type,
+                @NonNull Duration timerDuration, int subId);
 
         /**
-         * Indicates that Callback Mode has been stopped.
+         * Indicates that emergency callback mode has been re-started.
          * <p>
-         * This method will be called when the callback mode timer expires or when
-         * a normal call/SMS is sent
+         * This method will be called when an emergency SMS or emergency call is ended
+         * in the emergency callback mode.
+         * This is used to restart the emergency callback mode when it is already in progress.
          *
-         * @param type for callback mode entry
+         * @param type for the emergency callback mode entry
+         *             See {@link TelephonyManager.EmergencyCallbackModeType}.
          * @see TelephonyManager#EMERGENCY_CALLBACK_MODE_CALL
          * @see TelephonyManager#EMERGENCY_CALLBACK_MODE_SMS
          *
-         * @param reason for changing callback mode
+         * @param timerDuration is the time remaining in the emergency callback mode.
+         * @param subId The subscription ID used to restart the emergency callback mode.
+         */
+        @RequiresPermission(Manifest.permission.READ_PRIVILEGED_PHONE_STATE)
+        void onCallbackModeRestarted(@TelephonyManager.EmergencyCallbackModeType int type,
+                @NonNull Duration timerDuration, int subId);
+
+        /**
+         * Indicates that emergency callback mode has been stopped.
+         * <p>
+         * This method will be called when the emergency callback mode timer expires or when
+         * a normal call/SMS is sent
+         *
+         * @param type for the emergency callback mode entry
+         * @see TelephonyManager#EMERGENCY_CALLBACK_MODE_CALL
+         * @see TelephonyManager#EMERGENCY_CALLBACK_MODE_SMS
          *
+         * @param reason for changing emergency callback mode
          * @see TelephonyManager#STOP_REASON_UNKNOWN
          * @see TelephonyManager#STOP_REASON_OUTGOING_NORMAL_CALL_INITIATED
          * @see TelephonyManager#STOP_REASON_NORMAL_SMS_SENT
@@ -1711,10 +1741,12 @@ public class TelephonyCallback {
          * @see TelephonyManager#STOP_REASON_EMERGENCY_SMS_SENT
          * @see TelephonyManager#STOP_REASON_TIMER_EXPIRED
          * @see TelephonyManager#STOP_REASON_USER_ACTION
+         *
+         * @param subId is the current subscription used the emergency callback mode.
          */
         @RequiresPermission(Manifest.permission.READ_PRIVILEGED_PHONE_STATE)
-        void onCallBackModeStopped(@TelephonyManager.EmergencyCallbackModeType int type,
-                @TelephonyManager.EmergencyCallbackModeStopReason int reason);
+        void onCallbackModeStopped(@TelephonyManager.EmergencyCallbackModeType int type,
+                @TelephonyManager.EmergencyCallbackModeStopReason int reason, int subId);
     }
 
     /**
@@ -2132,18 +2164,43 @@ public class TelephonyCallback {
                             mediaQualityStatus)));
         }
 
-        public void onCallBackModeStarted(@TelephonyManager.EmergencyCallbackModeType int type) {
+        @RequiresPermission(Manifest.permission.READ_PRIVILEGED_PHONE_STATE)
+        public void onCallbackModeStarted(@TelephonyManager.EmergencyCallbackModeType int type,
+                long durationMillis, int subId) {
+            if (!Flags.emergencyCallbackModeNotification()) return;
+
             EmergencyCallbackModeListener listener =
                     (EmergencyCallbackModeListener) mTelephonyCallbackWeakRef.get();
             Log.d(LOG_TAG, "onCallBackModeStarted:type=" + type + ", listener=" + listener);
             if (listener == null) return;
 
+            final Duration timerDuration = Duration.ofMillis(durationMillis);
             Binder.withCleanCallingIdentity(
-                    () -> mExecutor.execute(() -> listener.onCallBackModeStarted(type)));
+                    () -> mExecutor.execute(() -> listener.onCallbackModeStarted(type,
+                            timerDuration, subId)));
         }
 
-        public void onCallBackModeStopped(@TelephonyManager.EmergencyCallbackModeType int type,
-                @TelephonyManager.EmergencyCallbackModeStopReason int reason) {
+        @RequiresPermission(Manifest.permission.READ_PRIVILEGED_PHONE_STATE)
+        public void onCallbackModeRestarted(@TelephonyManager.EmergencyCallbackModeType int type,
+                long durationMillis, int subId) {
+            if (!Flags.emergencyCallbackModeNotification()) return;
+
+            EmergencyCallbackModeListener listener =
+                    (EmergencyCallbackModeListener) mTelephonyCallbackWeakRef.get();
+            Log.d(LOG_TAG, "onCallbackModeRestarted:type=" + type + ", listener=" + listener);
+            if (listener == null) return;
+
+            final Duration timerDuration = Duration.ofMillis(durationMillis);
+            Binder.withCleanCallingIdentity(
+                    () -> mExecutor.execute(() -> listener.onCallbackModeRestarted(type,
+                            timerDuration, subId)));
+        }
+
+        @RequiresPermission(Manifest.permission.READ_PRIVILEGED_PHONE_STATE)
+        public void onCallbackModeStopped(@TelephonyManager.EmergencyCallbackModeType int type,
+                @TelephonyManager.EmergencyCallbackModeStopReason int reason, int subId) {
+            if (!Flags.emergencyCallbackModeNotification()) return;
+
             EmergencyCallbackModeListener listener =
                     (EmergencyCallbackModeListener) mTelephonyCallbackWeakRef.get();
             Log.d(LOG_TAG, "onCallBackModeStopped:type=" + type
@@ -2151,7 +2208,8 @@ public class TelephonyCallback {
             if (listener == null) return;
 
             Binder.withCleanCallingIdentity(
-                    () -> mExecutor.execute(() -> listener.onCallBackModeStopped(type, reason)));
+                    () -> mExecutor.execute(() -> listener.onCallbackModeStopped(type, reason,
+                            subId)));
         }
 
         public void onCarrierRoamingNtnModeChanged(boolean active) {
diff --git a/core/java/android/telephony/TelephonyRegistryManager.java b/core/java/android/telephony/TelephonyRegistryManager.java
index 10f03c15310c..3c7e924f07df 100644
--- a/core/java/android/telephony/TelephonyRegistryManager.java
+++ b/core/java/android/telephony/TelephonyRegistryManager.java
@@ -115,7 +115,6 @@ public class TelephonyRegistryManager {
                 ICarrierConfigChangeListener>
             mCarrierConfigChangeListenerMap = new ConcurrentHashMap<>();
 
-
     /** @hide **/
     public TelephonyRegistryManager(@NonNull Context context) {
         mContext = context;
@@ -1721,13 +1720,36 @@ public class TelephonyRegistryManager {
      * @param subId Sender subscription ID.
      * @param type for callback mode entry.
      *             See {@link TelephonyManager.EmergencyCallbackModeType}.
+     * @param durationMillis is the number of milliseconds remaining in the emergency callback
+     *                        mode.
+     * @hide
+     */
+    public void notifyCallbackModeStarted(int phoneId, int subId,
+            @TelephonyManager.EmergencyCallbackModeType int type, long durationMillis) {
+        try {
+            Log.d(TAG, "notifyCallbackModeStarted:type=" + type);
+            sRegistry.notifyCallbackModeStarted(phoneId, subId, type, durationMillis);
+        } catch (RemoteException ex) {
+            // system process is dead
+            throw ex.rethrowFromSystemServer();
+        }
+    }
+
+    /**
+     * Notify Callback Mode has been restarted.
+     * @param phoneId Sender phone ID.
+     * @param subId Sender subscription ID.
+     * @param type for callback mode entry.
+     *             See {@link TelephonyManager.EmergencyCallbackModeType}.
+     * @param durationMillis is the number of milliseconds remaining in the emergency callback
+     *                        mode.
      * @hide
      */
-    public void notifyCallBackModeStarted(int phoneId, int subId,
-            @TelephonyManager.EmergencyCallbackModeType int type) {
+    public void notifyCallbackModeRestarted(int phoneId, int subId,
+            @TelephonyManager.EmergencyCallbackModeType int type, long durationMillis) {
         try {
-            Log.d(TAG, "notifyCallBackModeStarted:type=" + type);
-            sRegistry.notifyCallbackModeStarted(phoneId, subId, type);
+            Log.d(TAG, "notifyCallbackModeRestarted:type=" + type);
+            sRegistry.notifyCallbackModeRestarted(phoneId, subId, type, durationMillis);
         } catch (RemoteException ex) {
             // system process is dead
             throw ex.rethrowFromSystemServer();
diff --git a/core/java/com/android/internal/telephony/IPhoneStateListener.aidl b/core/java/com/android/internal/telephony/IPhoneStateListener.aidl
index f177e1473b6a..81b885aa626b 100644
--- a/core/java/com/android/internal/telephony/IPhoneStateListener.aidl
+++ b/core/java/com/android/internal/telephony/IPhoneStateListener.aidl
@@ -78,8 +78,9 @@ oneway interface IPhoneStateListener {
     void onAllowedNetworkTypesChanged(in int reason, in long allowedNetworkType);
     void onLinkCapacityEstimateChanged(in List<LinkCapacityEstimate> linkCapacityEstimateList);
     void onMediaQualityStatusChanged(in MediaQualityStatus mediaQualityStatus);
-    void onCallBackModeStarted(int type);
-    void onCallBackModeStopped(int type, int reason);
+    void onCallbackModeStarted(int type, long durationMillis, int subId);
+    void onCallbackModeRestarted(int type, long durationMillis, int subId);
+    void onCallbackModeStopped(int type, int reason, int subId);
     void onSimultaneousCallingStateChanged(in int[] subIds);
     void onCarrierRoamingNtnModeChanged(in boolean active);
     void onCarrierRoamingNtnEligibleStateChanged(in boolean eligible);
diff --git a/core/java/com/android/internal/telephony/ITelephonyRegistry.aidl b/core/java/com/android/internal/telephony/ITelephonyRegistry.aidl
index e500a37abb53..f836cf2b9d87 100644
--- a/core/java/com/android/internal/telephony/ITelephonyRegistry.aidl
+++ b/core/java/com/android/internal/telephony/ITelephonyRegistry.aidl
@@ -118,7 +118,8 @@ interface ITelephonyRegistry {
     void removeCarrierConfigChangeListener(ICarrierConfigChangeListener listener, String pkg);
     void notifyCarrierConfigChanged(int phoneId, int subId, int carrierId, int specificCarrierId);
 
-    void notifyCallbackModeStarted(int phoneId, int subId, int type);
+    void notifyCallbackModeStarted(int phoneId, int subId, int type, long durationMillis);
+    void notifyCallbackModeRestarted(int phoneId, int subId, int type, long durationMillis);
     void notifyCallbackModeStopped(int phoneId, int subId, int type, int reason);
     void notifyCarrierRoamingNtnModeChanged(int subId, in boolean active);
     void notifyCarrierRoamingNtnEligibleStateChanged(int subId, in boolean eligible);
diff --git a/services/core/java/com/android/server/TelephonyRegistry.java b/services/core/java/com/android/server/TelephonyRegistry.java
index 744227760d95..39ac5150c7f1 100644
--- a/services/core/java/com/android/server/TelephonyRegistry.java
+++ b/services/core/java/com/android/server/TelephonyRegistry.java
@@ -422,9 +422,9 @@ public class TelephonyRegistry extends ITelephonyRegistry.Stub {
     private int[] mSimultaneousCellularCallingSubIds = {};
 
     private int[] mECBMReason;
-    private boolean[] mECBMStarted;
+    private long[] mECBMDuration;
     private int[] mSCBMReason;
-    private boolean[] mSCBMStarted;
+    private long[] mSCBMDuration;
 
     private boolean[] mCarrierRoamingNtnMode = null;
     private boolean[] mCarrierRoamingNtnEligible = null;
@@ -724,9 +724,9 @@ public class TelephonyRegistry extends ITelephonyRegistry.Stub {
             mAllowedNetworkTypeReason = copyOf(mAllowedNetworkTypeReason, mNumPhones);
             mAllowedNetworkTypeValue = copyOf(mAllowedNetworkTypeValue, mNumPhones);
             mECBMReason = copyOf(mECBMReason, mNumPhones);
-            mECBMStarted = copyOf(mECBMStarted, mNumPhones);
+            mECBMDuration = copyOf(mECBMDuration, mNumPhones);
             mSCBMReason = copyOf(mSCBMReason, mNumPhones);
-            mSCBMStarted = copyOf(mSCBMStarted, mNumPhones);
+            mSCBMDuration = copyOf(mSCBMDuration, mNumPhones);
             mCarrierRoamingNtnMode = copyOf(mCarrierRoamingNtnMode, mNumPhones);
             mCarrierRoamingNtnEligible = copyOf(mCarrierRoamingNtnEligible, mNumPhones);
             // ds -> ss switch.
@@ -784,9 +784,9 @@ public class TelephonyRegistry extends ITelephonyRegistry.Stub {
                 mCarrierPrivilegeStates.add(i, new Pair<>(Collections.emptyList(), new int[0]));
                 mCarrierServiceStates.add(i, new Pair<>(null, Process.INVALID_UID));
                 mECBMReason[i] = TelephonyManager.STOP_REASON_UNKNOWN;
-                mECBMStarted[i] = false;
+                mECBMDuration[i] = 0;
                 mSCBMReason[i] = TelephonyManager.STOP_REASON_UNKNOWN;
-                mSCBMStarted[i] = false;
+                mSCBMDuration[i] = 0;
                 mCarrierRoamingNtnMode[i] = false;
                 mCarrierRoamingNtnEligible[i] = false;
             }
@@ -859,9 +859,9 @@ public class TelephonyRegistry extends ITelephonyRegistry.Stub {
         mCarrierPrivilegeStates = new ArrayList<>();
         mCarrierServiceStates = new ArrayList<>();
         mECBMReason = new int[numPhones];
-        mECBMStarted = new boolean[numPhones];
+        mECBMDuration = new long[numPhones];
         mSCBMReason = new int[numPhones];
-        mSCBMStarted = new boolean[numPhones];
+        mSCBMDuration = new long[numPhones];
         mCarrierRoamingNtnMode = new boolean[numPhones];
         mCarrierRoamingNtnEligible = new boolean[numPhones];
 
@@ -904,9 +904,9 @@ public class TelephonyRegistry extends ITelephonyRegistry.Stub {
             mCarrierPrivilegeStates.add(i, new Pair<>(Collections.emptyList(), new int[0]));
             mCarrierServiceStates.add(i, new Pair<>(null, Process.INVALID_UID));
             mECBMReason[i] = TelephonyManager.STOP_REASON_UNKNOWN;
-            mECBMStarted[i] = false;
+            mECBMDuration[i] = 0;
             mSCBMReason[i] = TelephonyManager.STOP_REASON_UNKNOWN;
-            mSCBMStarted[i] = false;
+            mSCBMDuration[i] = 0;
             mCarrierRoamingNtnMode[i] = false;
             mCarrierRoamingNtnEligible[i] = false;
         }
@@ -1493,24 +1493,24 @@ public class TelephonyRegistry extends ITelephonyRegistry.Stub {
                 }
                 if (events.contains(TelephonyCallback.EVENT_EMERGENCY_CALLBACK_MODE_CHANGED)) {
                     try {
-                        boolean ecbmStarted = mECBMStarted[r.phoneId];
-                        if (ecbmStarted) {
-                            r.callback.onCallBackModeStarted(
-                                    TelephonyManager.EMERGENCY_CALLBACK_MODE_CALL);
+                        if (mECBMDuration[r.phoneId] != 0) {
+                            r.callback.onCallbackModeStarted(
+                                    TelephonyManager.EMERGENCY_CALLBACK_MODE_CALL,
+                                    mECBMDuration[r.phoneId], r.subId);
                         } else {
-                            r.callback.onCallBackModeStopped(
+                            r.callback.onCallbackModeStopped(
                                     TelephonyManager.EMERGENCY_CALLBACK_MODE_CALL,
-                                    mECBMReason[r.phoneId]);
+                                    mECBMReason[r.phoneId], r.subId);
                         }
 
-                        boolean scbmStarted = mSCBMStarted[r.phoneId];
-                        if (scbmStarted) {
-                            r.callback.onCallBackModeStarted(
-                                    TelephonyManager.EMERGENCY_CALLBACK_MODE_SMS);
+                        if (mSCBMReason[r.phoneId] != 0) {
+                            r.callback.onCallbackModeStarted(
+                                    TelephonyManager.EMERGENCY_CALLBACK_MODE_SMS,
+                                    mSCBMDuration[r.phoneId], r.subId);
                         } else {
-                            r.callback.onCallBackModeStopped(
+                            r.callback.onCallbackModeStopped(
                                     TelephonyManager.EMERGENCY_CALLBACK_MODE_SMS,
-                                    mSCBMReason[r.phoneId]);
+                                    mSCBMReason[r.phoneId], r.subId);
                         }
                     } catch (RemoteException ex) {
                         remove(r.binder);
@@ -3457,10 +3457,9 @@ public class TelephonyRegistry extends ITelephonyRegistry.Stub {
     }
 
     @Override
-    public void notifyCallbackModeStarted(int phoneId, int subId, int type) {
-        if (!checkNotifyPermission("notifyCallbackModeStarted()")) {
-            return;
-        }
+    public void notifyCallbackModeStarted(int phoneId, int subId, int type, long durationMillis) {
+        if (!checkNotifyPermission("notifyCallbackModeStarted()")) return;
+
         if (VDBG) {
             log("notifyCallbackModeStarted: phoneId=" + phoneId + ", subId=" + subId
                     + ", type=" + type);
@@ -3468,9 +3467,9 @@ public class TelephonyRegistry extends ITelephonyRegistry.Stub {
         synchronized (mRecords) {
             if (validatePhoneId(phoneId)) {
                 if (type == TelephonyManager.EMERGENCY_CALLBACK_MODE_CALL) {
-                    mECBMStarted[phoneId] = true;
+                    mECBMDuration[phoneId] = durationMillis;
                 } else if (type == TelephonyManager.EMERGENCY_CALLBACK_MODE_SMS) {
-                    mSCBMStarted[phoneId] = true;
+                    mSCBMDuration[phoneId] = durationMillis;
                 }
             }
             for (Record r : mRecords) {
@@ -3478,7 +3477,7 @@ public class TelephonyRegistry extends ITelephonyRegistry.Stub {
                 if (r.matchTelephonyCallbackEvent(
                         TelephonyCallback.EVENT_EMERGENCY_CALLBACK_MODE_CHANGED)) {
                     try {
-                        r.callback.onCallBackModeStarted(type);
+                        r.callback.onCallbackModeStarted(type, durationMillis, subId);
                     } catch (RemoteException ex) {
                         mRemoveList.add(r.binder);
                     }
@@ -3489,10 +3488,41 @@ public class TelephonyRegistry extends ITelephonyRegistry.Stub {
     }
 
     @Override
-    public void notifyCallbackModeStopped(int phoneId, int subId, int type, int reason) {
-        if (!checkNotifyPermission("notifyCallbackModeStopped()")) {
-            return;
+    public void notifyCallbackModeRestarted(int phoneId, int subId, int type,
+            long durationMillis) {
+        if (!checkNotifyPermission("notifyCallbackModeRestarted()")) return;
+
+        if (VDBG) {
+            log("notifyCallbackModeRestarted: phoneId=" + phoneId + ", subId=" + subId
+                    + ", type=" + type);
         }
+        synchronized (mRecords) {
+            if (validatePhoneId(phoneId)) {
+                if (type == TelephonyManager.EMERGENCY_CALLBACK_MODE_CALL) {
+                    mECBMDuration[phoneId] = durationMillis;
+                } else if (type == TelephonyManager.EMERGENCY_CALLBACK_MODE_SMS) {
+                    mSCBMDuration[phoneId] = durationMillis;
+                }
+            }
+            for (Record r : mRecords) {
+                // Send to all listeners regardless of subscription
+                if (r.matchTelephonyCallbackEvent(
+                        TelephonyCallback.EVENT_EMERGENCY_CALLBACK_MODE_CHANGED)) {
+                    try {
+                        r.callback.onCallbackModeRestarted(type, durationMillis, subId);
+                    } catch (RemoteException ex) {
+                        mRemoveList.add(r.binder);
+                    }
+                }
+            }
+        }
+        handleRemoveListLocked();
+    }
+
+    @Override
+    public void notifyCallbackModeStopped(int phoneId, int subId, int type, int reason) {
+        if (!checkNotifyPermission("notifyCallbackModeStopped()")) return;
+
         if (VDBG) {
             log("notifyCallbackModeStopped: phoneId=" + phoneId + ", subId=" + subId
                     + ", type=" + type + ", reason=" + reason);
@@ -3500,11 +3530,11 @@ public class TelephonyRegistry extends ITelephonyRegistry.Stub {
         synchronized (mRecords) {
             if (validatePhoneId(phoneId)) {
                 if (type == TelephonyManager.EMERGENCY_CALLBACK_MODE_CALL) {
-                    mECBMStarted[phoneId] = false;
                     mECBMReason[phoneId] = reason;
+                    mECBMDuration[phoneId] = 0;
                 } else if (type == TelephonyManager.EMERGENCY_CALLBACK_MODE_SMS) {
-                    mSCBMStarted[phoneId] = false;
                     mSCBMReason[phoneId] = reason;
+                    mSCBMDuration[phoneId] = 0;
                 }
             }
             for (Record r : mRecords) {
@@ -3512,7 +3542,7 @@ public class TelephonyRegistry extends ITelephonyRegistry.Stub {
                 if (r.matchTelephonyCallbackEvent(
                         TelephonyCallback.EVENT_EMERGENCY_CALLBACK_MODE_CHANGED)) {
                     try {
-                        r.callback.onCallBackModeStopped(type, reason);
+                        r.callback.onCallbackModeStopped(type, reason, subId);
                     } catch (RemoteException ex) {
                         mRemoveList.add(r.binder);
                     }
@@ -3662,9 +3692,9 @@ public class TelephonyRegistry extends ITelephonyRegistry.Stub {
                 pw.println("mPhysicalChannelConfigs=" + mPhysicalChannelConfigs.get(i));
                 pw.println("mLinkCapacityEstimateList=" + mLinkCapacityEstimateLists.get(i));
                 pw.println("mECBMReason=" + mECBMReason[i]);
-                pw.println("mECBMStarted=" + mECBMStarted[i]);
+                pw.println("mECBMDuration=" + mECBMDuration[i]);
                 pw.println("mSCBMReason=" + mSCBMReason[i]);
-                pw.println("mSCBMStarted=" + mSCBMStarted[i]);
+                pw.println("mSCBMDuration=" + mSCBMDuration[i]);
                 pw.println("mCarrierRoamingNtnMode=" + mCarrierRoamingNtnMode[i]);
                 pw.println("mCarrierRoamingNtnEligible=" + mCarrierRoamingNtnEligible[i]);
 
diff --git a/telephony/java/android/telephony/TelephonyManager.java b/telephony/java/android/telephony/TelephonyManager.java
index f01cfc16868d..fee45873502b 100644
--- a/telephony/java/android/telephony/TelephonyManager.java
+++ b/telephony/java/android/telephony/TelephonyManager.java
@@ -19180,15 +19180,19 @@ public class TelephonyManager {
     public @interface EmergencyCallbackModeType {}
 
     /**
-     * The callback mode is due to emergency call.
+     * The emergency callback mode is due to emergency call.
      * @hide
      */
+    @FlaggedApi(Flags.FLAG_EMERGENCY_CALLBACK_MODE_NOTIFICATION)
+    @SystemApi
     public static final int EMERGENCY_CALLBACK_MODE_CALL = 1;
 
     /**
-     * The callback mode is due to emergency SMS.
+     * The emergency callback mode is due to emergency SMS.
      * @hide
      */
+    @FlaggedApi(Flags.FLAG_EMERGENCY_CALLBACK_MODE_NOTIFICATION)
+    @SystemApi
     public static final int EMERGENCY_CALLBACK_MODE_SMS = 2;
 
     /**
@@ -19209,45 +19213,64 @@ public class TelephonyManager {
     public @interface EmergencyCallbackModeStopReason {}
 
     /**
-     * unknown reason.
+     * Indicates that emergency callback mode has been stopped for an unknown reason.
      * @hide
      */
+    @FlaggedApi(Flags.FLAG_EMERGENCY_CALLBACK_MODE_NOTIFICATION)
+    @SystemApi
     public static final int STOP_REASON_UNKNOWN = 0;
 
     /**
-     * The call back mode is exited due to a new normal call is originated.
+     * Indicates that emergency callback mode has been stopped because a new non-emergency call was
+     * initiated.
      * @hide
      */
+    @FlaggedApi(Flags.FLAG_EMERGENCY_CALLBACK_MODE_NOTIFICATION)
+    @SystemApi
     public static final int STOP_REASON_OUTGOING_NORMAL_CALL_INITIATED = 1;
 
     /**
-     * The call back mode is exited due to a new normal SMS is originated.
+     * Indicates that emergency callback mode has been stopped because a new non-emergency SMS was
+     * sent.
      * @hide
      */
+    @FlaggedApi(Flags.FLAG_EMERGENCY_CALLBACK_MODE_NOTIFICATION)
+    @SystemApi
     public static final int STOP_REASON_NORMAL_SMS_SENT = 2;
 
     /**
-     * The call back mode is exited due to a new emergency call is originated.
+     * Indicates that emergency callback mode has been stopped because a new outgoing emergency
+     * call was initiated.
      * @hide
      */
+    @FlaggedApi(Flags.FLAG_EMERGENCY_CALLBACK_MODE_NOTIFICATION)
+    @SystemApi
     public static final int STOP_REASON_OUTGOING_EMERGENCY_CALL_INITIATED = 3;
 
     /**
-     * The call back mode is exited due to a new emergency SMS is originated.
+     * Indicates that emergency callback mode has been stopped because a new emergency SMS was sent.
      * @hide
      */
+    @FlaggedApi(Flags.FLAG_EMERGENCY_CALLBACK_MODE_NOTIFICATION)
+    @SystemApi
     public static final int STOP_REASON_EMERGENCY_SMS_SENT = 4;
 
     /**
-     * The call back mode is exited due to timer expiry.
+     * Indicates that emergency callback mode has been stopped due to the emergency callback mode
+     * timer expiry.
      * @hide
      */
+    @FlaggedApi(Flags.FLAG_EMERGENCY_CALLBACK_MODE_NOTIFICATION)
+    @SystemApi
     public static final int STOP_REASON_TIMER_EXPIRED = 5;
 
     /**
-     * The call back mode is exited due to user action.
+     * Indicates that emergency callback mode has been stopped due to user ending the emergency
+     * mode by clicking the notification.
      * @hide
      */
+    @FlaggedApi(Flags.FLAG_EMERGENCY_CALLBACK_MODE_NOTIFICATION)
+    @SystemApi
     public static final int STOP_REASON_USER_ACTION = 6;
 
     /**