diff --git a/api/current.txt b/api/current.txt
index 9dec22e7ca65c..2e2a398a119ec 100644
--- a/api/current.txt
+++ b/api/current.txt
@@ -45134,6 +45134,7 @@ package android.telephony {
     method @RequiresPermission(anyOf={android.Manifest.permission.ACCESS_NETWORK_STATE, android.Manifest.permission.READ_PHONE_STATE}) public boolean isDataRoamingEnabled();
     method public boolean isHearingAidCompatibilitySupported();
     method public boolean isNetworkRoaming();
+    method public boolean isRttSupported();
     method public boolean isSmsCapable();
     method @Deprecated public boolean isTtyModeSupported();
     method public boolean isVoiceCapable();
diff --git a/api/test-current.txt b/api/test-current.txt
index a1d9c7787b13f..ca1f0cce0215f 100644
--- a/api/test-current.txt
+++ b/api/test-current.txt
@@ -2123,7 +2123,6 @@ package android.telephony {
   public class TelephonyManager {
     method public int checkCarrierPrivilegesForPackage(String);
     method public int getCarrierIdListVersion();
-    method public boolean isRttSupported();
     method @RequiresPermission(android.Manifest.permission.MODIFY_PHONE_STATE) public void refreshUiccProfile();
     method public void setCarrierTestOverride(String, String, String, String, String, String, String);
     field public static final int CARRIER_PRIVILEGE_STATUS_ERROR_LOADING_RULES = -2; // 0xfffffffe
diff --git a/telephony/java/android/telephony/TelephonyManager.java b/telephony/java/android/telephony/TelephonyManager.java
index 7c3bde4293c74..bc727a8fe1af7 100644
--- a/telephony/java/android/telephony/TelephonyManager.java
+++ b/telephony/java/android/telephony/TelephonyManager.java
@@ -7974,9 +7974,7 @@ public class TelephonyManager {
      * support for the feature and device firmware support.
      *
      * @return {@code true} if the device and carrier both support RTT, {@code false} otherwise.
-     * @hide
      */
-    @TestApi
     public boolean isRttSupported() {
         try {
             ITelephony telephony = getITelephony();