diff --git a/src/com/android/phone/PhoneInterfaceManager.java b/src/com/android/phone/PhoneInterfaceManager.java
index 903f141..596fc61 100644
--- a/src/com/android/phone/PhoneInterfaceManager.java
+++ b/src/com/android/phone/PhoneInterfaceManager.java
@@ -4389,6 +4389,76 @@
     }
 
     /**
+     * Requires carrier privileges or READ_PRECISE_PHONE_STATE permission.
+     * @param subId The subscription to use to check the configuration.
+     * @param c The callback that will be used to send the result.
+     */
+    @Override
+    public void registerImsEmergencyRegistrationCallback(int subId, IImsRegistrationCallback c)
+            throws RemoteException {
+        TelephonyPermissions.enforceCallingOrSelfReadPrecisePhoneStatePermissionOrCarrierPrivilege(
+                mApp, subId, "registerImsEmergencyRegistrationCallback");
+
+        if (!ImsManager.isImsSupportedOnDevice(mApp)) {
+            throw new ServiceSpecificException(ImsException.CODE_ERROR_UNSUPPORTED_OPERATION,
+                    "IMS not available on device.");
+        }
+        final long token = Binder.clearCallingIdentity();
+        try {
+            int slotId = getSlotIndexOrException(subId);
+            verifyImsMmTelConfiguredOrThrow(slotId);
+
+            ImsStateCallbackController controller = ImsStateCallbackController.getInstance();
+            if (controller != null) {
+                ImsManager imsManager = controller.getImsManager(subId);
+                if (imsManager != null) {
+                    imsManager.addEmergencyRegistrationCallbackForSubscription(c, subId);
+                } else {
+                    throw new ServiceSpecificException(ImsException.CODE_ERROR_SERVICE_UNAVAILABLE);
+                }
+            } else {
+                throw new ServiceSpecificException(ImsException.CODE_ERROR_UNSUPPORTED_OPERATION);
+            }
+        } catch (ImsException e) {
+            throw new ServiceSpecificException(e.getCode());
+        } finally {
+            Binder.restoreCallingIdentity(token);
+        }
+    }
+
+    /**
+     * Requires carrier privileges or READ_PRECISE_PHONE_STATE permission.
+     * @param subId The subscription to use to check the configuration.
+     * @param c The callback that will be used to send the result.
+     */
+    @Override
+    public void unregisterImsEmergencyRegistrationCallback(int subId, IImsRegistrationCallback c) {
+        TelephonyPermissions.enforceCallingOrSelfReadPrecisePhoneStatePermissionOrCarrierPrivilege(
+                mApp, subId, "unregisterImsEmergencyRegistrationCallback");
+        if (!SubscriptionManager.isValidSubscriptionId(subId)) {
+            throw new IllegalArgumentException("Invalid Subscription ID: " + subId);
+        }
+        final long token = Binder.clearCallingIdentity();
+
+        try {
+            ImsStateCallbackController controller = ImsStateCallbackController.getInstance();
+            if (controller != null) {
+                ImsManager imsManager = controller.getImsManager(subId);
+                if (imsManager != null) {
+                    imsManager.removeEmergencyRegistrationCallbackForSubscription(c, subId);
+                } else {
+                    Log.i(LOG_TAG, "unregisterImsEmergencyRegistrationCallback: " + subId
+                            + "is inactive, ignoring unregister.");
+                    // If the ImsManager is not valid, just return, since the callback
+                    // will already have been removed internally.
+                }
+            }
+        } finally {
+            Binder.restoreCallingIdentity(token);
+        }
+    }
+
+    /**
      * Get the IMS service registration state for the MmTelFeature associated with this sub id.
      */
     @Override