diff --git a/core/api/system-current.txt b/core/api/system-current.txt
index 1aa8aed7c7ec4..f5b40f5689d80 100644
--- a/core/api/system-current.txt
+++ b/core/api/system-current.txt
@@ -11970,8 +11970,7 @@ package android.telephony.ims {
   }
 
   public interface SipDelegateConnection {
-    method public default void cleanupSession(@NonNull String);
-    method @Deprecated public default void closeDialog(@NonNull String);
+    method public void cleanupSession(@NonNull String);
     method public void notifyMessageReceiveError(@NonNull String, int);
     method public void notifyMessageReceived(@NonNull String);
     method public void sendMessage(@NonNull android.telephony.ims.SipMessage, long);
@@ -12422,8 +12421,7 @@ package android.telephony.ims.stub {
   }
 
   public interface SipDelegate {
-    method public default void cleanupSession(@NonNull String);
-    method @Deprecated public default void closeDialog(@NonNull String);
+    method public void cleanupSession(@NonNull String);
     method public void notifyMessageReceiveError(@NonNull String, int);
     method public void notifyMessageReceived(@NonNull String);
     method public void sendMessage(@NonNull android.telephony.ims.SipMessage, long);
diff --git a/telephony/java/android/telephony/ims/SipDelegateConnection.java b/telephony/java/android/telephony/ims/SipDelegateConnection.java
index 4dbb08d14ccd4..498b408fe1390 100644
--- a/telephony/java/android/telephony/ims/SipDelegateConnection.java
+++ b/telephony/java/android/telephony/ims/SipDelegateConnection.java
@@ -61,26 +61,6 @@ public interface SipDelegateConnection {
      */
     void notifyMessageReceived(@NonNull String viaTransactionId);
 
-    /**
-     * The SIP Dialog associated with the provided Call-ID is being closed and routing resources
-     * associated with the SIP dialog are free to be released.
-     * <p>
-     * Calling this method is also mandatory for situations where the framework IMS stack is waiting
-     * for pending SIP dialogs to be closed before it can perform a handover or apply a provisioning
-     * change. See {@link DelegateRegistrationState} for more information about
-     * the scenarios where this can occur.
-     * <p>
-     * This method will need to be called for each SIP dialog managed by this application when it is
-     * closed.
-     * @param callId The call-ID header value associated with the ongoing SIP Dialog that is
-     *         closing.
-     * @deprecated closeDialog does not capture INVITE forking. Use {@link #cleanupSession} instead.
-     */
-    @Deprecated
-    default void closeDialog(@NonNull String callId) {
-        cleanupSession(callId);
-    }
-
     /**
      * The SIP session associated with the provided Call-ID is being closed and routing resources
      * associated with the session are free to be released. Each SIP session may contain multiple
@@ -97,7 +77,7 @@ public interface SipDelegateConnection {
      * @param callId The call-ID header value associated with the ongoing SIP Dialog that is
      *         closing.
      */
-    default void cleanupSession(@NonNull String callId) { }
+    void cleanupSession(@NonNull String callId);
 
     /**
      * Notify the SIP delegate that the SIP message has been received from
diff --git a/telephony/java/android/telephony/ims/stub/SipDelegate.java b/telephony/java/android/telephony/ims/stub/SipDelegate.java
index 997d00bc91c7e..7dbefb4474a64 100644
--- a/telephony/java/android/telephony/ims/stub/SipDelegate.java
+++ b/telephony/java/android/telephony/ims/stub/SipDelegate.java
@@ -63,25 +63,6 @@ public interface SipDelegate {
      */
     void sendMessage(@NonNull SipMessage message, long configVersion);
 
-    /**
-     * The framework is requesting that routing resources associated with the SIP dialog using the
-     * provided Call-ID to be cleaned up.
-     * <p>
-     * Typically, a SIP Dialog close event will be signalled by that dialog receiving a BYE or
-     * 200 OK message, however, the IMS application will still call
-     * {@link SipDelegateConnection#closeDialog(String)} to signal to the framework that resources
-     * can be released. In some cases, the framework will request that the ImsService close the
-     * dialog due to the open dialog holding up an event such as applying a provisioning change or
-     * handing over to another transport type. See {@link DelegateRegistrationState}.
-     *
-     * @param callId The call-ID header value associated with the ongoing SIP Dialog that the
-     *         framework is requesting be closed.
-     * @deprecated This method does not take into account INVITE forking. Use
-     * {@link #cleanupSession(String)} instead.
-     */
-    @Deprecated
-    default void closeDialog(@NonNull String callId) { }
-
     /**
      * The remote IMS application has closed a SIP session and the routing resources associated
      * with the SIP session using the provided Call-ID may now be cleaned up.
@@ -97,9 +78,7 @@ public interface SipDelegate {
      * @param callId The call-ID header value associated with the ongoing SIP Session that the
      *         framework is requesting be cleaned up.
      */
-    default void cleanupSession(@NonNull String callId) {
-        closeDialog(callId);
-    }
+    void cleanupSession(@NonNull String callId);
 
     /**
      * The remote application has received the SIP message and is processing it.