diff --git a/core/java/android/app/LocaleManager.java b/core/java/android/app/LocaleManager.java
index 332a6212b9e36..522dc845f57c7 100644
--- a/core/java/android/app/LocaleManager.java
+++ b/core/java/android/app/LocaleManager.java
@@ -55,6 +55,9 @@ public class LocaleManager {
      *
      * <p>Pass a {@link LocaleList#getEmptyLocaleList()} to reset to the system locale.
      *
+     * <p><b>Note:</b> The set locales are persisted; they are backed up if the user has enabled
+     * Backup & Restore.
+     *
      * @param locales the desired locales for the calling app.
      */
     @UserHandleAware
@@ -67,6 +70,9 @@ public class LocaleManager {
      *
      * <p>Pass a {@link LocaleList#getEmptyLocaleList()} to reset to the system locale.
      *
+     * <p><b>Note:</b> The set locales are persisted; they are backed up if the user has enabled
+     * Backup & Restore.
+     *
      * @param appPackageName the package name of the app for which to set the locales.
      * @param locales the desired locales for the specified app.
      * @hide