diff --git a/core/api/system-current.txt b/core/api/system-current.txt
index 2f66ef7..7f8d68a 100644
--- a/core/api/system-current.txt
+++ b/core/api/system-current.txt
@@ -10550,7 +10550,6 @@
 
   public abstract class DataService.DataServiceProvider implements java.lang.AutoCloseable {
     ctor public DataService.DataServiceProvider(int);
-    method public void cancelHandover(int, @NonNull android.telephony.data.DataServiceCallback);
     method public abstract void close();
     method public void deactivateDataCall(int, int, @Nullable android.telephony.data.DataServiceCallback);
     method public final int getSlotIndex();
@@ -10561,15 +10560,12 @@
     method public void setInitialAttachApn(@NonNull android.telephony.data.DataProfile, boolean, @NonNull android.telephony.data.DataServiceCallback);
     method public void setupDataCall(int, @NonNull android.telephony.data.DataProfile, boolean, boolean, int, @Nullable android.net.LinkProperties, @NonNull android.telephony.data.DataServiceCallback);
     method public void setupDataCall(int, @NonNull android.telephony.data.DataProfile, boolean, boolean, int, @Nullable android.net.LinkProperties, @IntRange(from=0, to=15) int, @Nullable android.telephony.data.SliceInfo, @Nullable android.telephony.data.TrafficDescriptor, boolean, @NonNull android.telephony.data.DataServiceCallback);
-    method public void startHandover(int, @NonNull android.telephony.data.DataServiceCallback);
   }
 
   public class DataServiceCallback {
     method public void onApnUnthrottled(@NonNull String);
     method public void onDataCallListChanged(@NonNull java.util.List<android.telephony.data.DataCallResponse>);
     method public void onDeactivateDataCallComplete(int);
-    method public void onHandoverCancelled(int);
-    method public void onHandoverStarted(int);
     method public void onRequestDataCallListComplete(int, @NonNull java.util.List<android.telephony.data.DataCallResponse>);
     method public void onSetDataProfileComplete(int);
     method public void onSetInitialAttachApnComplete(int);
diff --git a/telephony/java/android/telephony/data/DataService.java b/telephony/java/android/telephony/data/DataService.java
index 74d2694..f5f29c6 100644
--- a/telephony/java/android/telephony/data/DataService.java
+++ b/telephony/java/android/telephony/data/DataService.java
@@ -295,6 +295,8 @@
          *
          * @param cid The identifier of the data call which is provided in {@link DataCallResponse}
          * @param callback The result callback for this request.
+         *
+         * @hide
          */
         public void startHandover(int cid, @NonNull DataServiceCallback callback) {
             // The default implementation is to return unsupported.
@@ -315,6 +317,8 @@
          *
          * @param cid The identifier of the data call which is provided in {@link DataCallResponse}
          * @param callback The result callback for this request.
+         *
+         * @hide
          */
         public void cancelHandover(int cid, @NonNull DataServiceCallback callback) {
             // The default implementation is to return unsupported.
diff --git a/telephony/java/android/telephony/data/DataServiceCallback.java b/telephony/java/android/telephony/data/DataServiceCallback.java
index f56c19b..ca1f861 100644
--- a/telephony/java/android/telephony/data/DataServiceCallback.java
+++ b/telephony/java/android/telephony/data/DataServiceCallback.java
@@ -191,6 +191,8 @@
      * Called to indicate result for the request {@link DataService#startHandover}.
      *
      * @param result The result code. Must be one of the {@link ResultCode}
+     *
+     * @hide
      */
     public void onHandoverStarted(@ResultCode int result) {
         if (mCallback != null) {
@@ -209,6 +211,8 @@
      * Called to indicate result for the request {@link DataService#cancelHandover}.
      *
      * @param result The result code. Must be one of the {@link ResultCode}
+     *
+     * @hide
      */
     public void onHandoverCancelled(@ResultCode int result) {
         if (mCallback != null) {