diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index 791b306..365ff3a 100644
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -20171,6 +20171,36 @@
              */
             public static final int PHONE_SWITCHING_STATUS_IN_PROGRESS_MIGRATION_SUCCESS = 11;
 
+            /**
+             * Phone switching request source
+             * @hide
+             */
+            public static final String PHONE_SWITCHING_REQUEST_SOURCE =
+                    "phone_switching_request_source";
+
+            /**
+             * No phone switching request source
+             * @hide
+             */
+            public static final int PHONE_SWITCHING_REQUEST_SOURCE_NONE = 0;
+
+            /**
+             * Phone switching triggered by watch
+             * @hide
+             */
+            public static final int PHONE_SWITCHING_REQUEST_SOURCE_WATCH = 1;
+
+            /**
+             * Phone switching triggered by companion, user confirmation required
+             * @hide
+             */
+            public static final int PHONE_SWITCHING_REQUEST_SOURCE_COMPANION_USER_CONFIRMATION = 2;
+
+            /**
+             * Phone switching triggered by companion, user confirmation not required
+             * @hide
+             */
+            public static final int PHONE_SWITCHING_REQUEST_SOURCE_COMPANION = 3;
 
             /**
              * Whether the device has enabled the feature to reduce motion and animation
diff --git a/packages/SettingsProvider/src/android/provider/settings/validators/GlobalSettingsValidators.java b/packages/SettingsProvider/src/android/provider/settings/validators/GlobalSettingsValidators.java
index 03c2a83..89cc18c5 100644
--- a/packages/SettingsProvider/src/android/provider/settings/validators/GlobalSettingsValidators.java
+++ b/packages/SettingsProvider/src/android/provider/settings/validators/GlobalSettingsValidators.java
@@ -457,5 +457,10 @@
         VALIDATORS.put(Global.ADD_USERS_WHEN_LOCKED, BOOLEAN_VALIDATOR);
         VALIDATORS.put(Global.REMOVE_GUEST_ON_EXIT, BOOLEAN_VALIDATOR);
         VALIDATORS.put(Global.USER_SWITCHER_ENABLED, BOOLEAN_VALIDATOR);
+        VALIDATORS.put(Global.Wearable.PHONE_SWITCHING_REQUEST_SOURCE,
+            new InclusiveIntegerRangeValidator(
+                Global.Wearable.PHONE_SWITCHING_REQUEST_SOURCE_NONE,
+                Global.Wearable.PHONE_SWITCHING_REQUEST_SOURCE_COMPANION
+        ));
     }
 }
diff --git a/packages/SettingsProvider/test/src/android/provider/SettingsBackupTest.java b/packages/SettingsProvider/test/src/android/provider/SettingsBackupTest.java
index e66bacf..fa44d33 100644
--- a/packages/SettingsProvider/test/src/android/provider/SettingsBackupTest.java
+++ b/packages/SettingsProvider/test/src/android/provider/SettingsBackupTest.java
@@ -633,7 +633,8 @@
                     Settings.Global.Wearable.WEAR_MEDIA_CONTROLS_PACKAGE,
                     Settings.Global.Wearable.WEAR_MEDIA_SESSIONS_PACKAGE,
                     Settings.Global.Wearable.WEAR_POWER_ANOMALY_SERVICE_ENABLED,
-                    Settings.Global.Wearable.CONNECTIVITY_KEEP_DATA_ON);
+                    Settings.Global.Wearable.CONNECTIVITY_KEEP_DATA_ON,
+                    Settings.Global.Wearable.PHONE_SWITCHING_REQUEST_SOURCE);
 
     private static final Set<String> BACKUP_DENY_LIST_SECURE_SETTINGS =
              newHashSet(