diff --git a/tv/tuner/aidl/Android.bp b/tv/tuner/aidl/Android.bp
index 7ffc8bb..e53e84d 100644
--- a/tv/tuner/aidl/Android.bp
+++ b/tv/tuner/aidl/Android.bp
@@ -40,5 +40,6 @@
             ],
         },
     ],
+    frozen: false,
 
 }
diff --git a/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendStandardExt.aidl b/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendStandardExt.aidl
new file mode 100644
index 0000000..88637db
--- /dev/null
+++ b/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendStandardExt.aidl
@@ -0,0 +1,40 @@
+/*
+ * Copyright 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.tv.tuner;
+/* @hide */
+@VintfStability
+union FrontendStandardExt {
+  android.hardware.tv.tuner.FrontendDvbsStandard dvbsStandardExt = android.hardware.tv.tuner.FrontendDvbsStandard.UNDEFINED;
+  android.hardware.tv.tuner.FrontendDvbtStandard dvbtStandardExt = android.hardware.tv.tuner.FrontendDvbtStandard.UNDEFINED;
+}
diff --git a/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendStatus.aidl b/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendStatus.aidl
index b991ab6..e79eba6 100644
--- a/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendStatus.aidl
+++ b/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendStatus.aidl
@@ -82,4 +82,5 @@
   long iptvPacketsLost;
   int iptvWorstJitterMs;
   int iptvAverageJitterMs;
+  android.hardware.tv.tuner.FrontendStandardExt standardExt;
 }
diff --git a/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendStatusType.aidl b/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendStatusType.aidl
index 9f34e8d..bfd2145 100644
--- a/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendStatusType.aidl
+++ b/tv/tuner/aidl/aidl_api/android.hardware.tv.tuner/current/android/hardware/tv/tuner/FrontendStatusType.aidl
@@ -82,4 +82,5 @@
   IPTV_PACKETS_RECEIVED,
   IPTV_WORST_JITTER_MS,
   IPTV_AVERAGE_JITTER_MS,
+  STANDARD_EXT,
 }
diff --git a/tv/tuner/aidl/android/hardware/tv/tuner/FrontendStandardExt.aidl b/tv/tuner/aidl/android/hardware/tv/tuner/FrontendStandardExt.aidl
new file mode 100644
index 0000000..0b68e89
--- /dev/null
+++ b/tv/tuner/aidl/android/hardware/tv/tuner/FrontendStandardExt.aidl
@@ -0,0 +1,36 @@
+/*
+ * Copyright 2024 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package android.hardware.tv.tuner;
+
+import android.hardware.tv.tuner.FrontendDvbsStandard;
+import android.hardware.tv.tuner.FrontendDvbtStandard;
+
+/**
+ * @hide
+ */
+@VintfStability
+union FrontendStandardExt {
+    /**
+     * The DVB-S standard extension after standard transition.
+     */
+    FrontendDvbsStandard dvbsStandardExt = FrontendDvbsStandard.UNDEFINED;
+
+    /**
+     * The DVB-T standard extension after standard transition.
+     */
+    FrontendDvbtStandard dvbtStandardExt = FrontendDvbtStandard.UNDEFINED;
+}
diff --git a/tv/tuner/aidl/android/hardware/tv/tuner/FrontendStatus.aidl b/tv/tuner/aidl/android/hardware/tv/tuner/FrontendStatus.aidl
index 391f29b..a3902df 100644
--- a/tv/tuner/aidl/android/hardware/tv/tuner/FrontendStatus.aidl
+++ b/tv/tuner/aidl/android/hardware/tv/tuner/FrontendStatus.aidl
@@ -28,6 +28,7 @@
 import android.hardware.tv.tuner.FrontendRollOff;
 import android.hardware.tv.tuner.FrontendScanAtsc3PlpInfo;
 import android.hardware.tv.tuner.FrontendSpectralInversion;
+import android.hardware.tv.tuner.FrontendStandardExt;
 import android.hardware.tv.tuner.FrontendStatusAtsc3PlpInfo;
 import android.hardware.tv.tuner.FrontendTransmissionMode;
 import android.hardware.tv.tuner.LnbVoltage;
@@ -272,4 +273,13 @@
      * Average jitter (milliseconds).
      */
     int iptvAverageJitterMs;
+
+    /**
+     * Standard extension.
+     *
+     * DVB-T and DVB-S can transition to another standard within the same standard series. For
+     * example, DVB-T can transition to DVB-T2 and back. This attribute represents the standard
+     * extension. Valid values include FrontendDvbtStandard.T or FrontendDvbsStandard.S2 etc.
+     */
+    FrontendStandardExt standardExt;
 }
diff --git a/tv/tuner/aidl/android/hardware/tv/tuner/FrontendStatusType.aidl b/tv/tuner/aidl/android/hardware/tv/tuner/FrontendStatusType.aidl
index 6804b2d..3225c42 100644
--- a/tv/tuner/aidl/android/hardware/tv/tuner/FrontendStatusType.aidl
+++ b/tv/tuner/aidl/android/hardware/tv/tuner/FrontendStatusType.aidl
@@ -259,4 +259,9 @@
      * Average jitter (milliseconds).
      */
     IPTV_AVERAGE_JITTER_MS,
+
+    /**
+     * Standard extension.
+     */
+    STANDARD_EXT,
 }
diff --git a/tv/tuner/aidl/default/Frontend.cpp b/tv/tuner/aidl/default/Frontend.cpp
index 1031604..bba004a 100644
--- a/tv/tuner/aidl/default/Frontend.cpp
+++ b/tv/tuner/aidl/default/Frontend.cpp
@@ -81,6 +81,7 @@
                     FrontendStatusType::SIGNAL_STRENGTH, FrontendStatusType::SYMBOL_RATE,
                     FrontendStatusType::MODULATION,      FrontendStatusType::MODULATIONS,
                     FrontendStatusType::ROLL_OFF,        FrontendStatusType::IS_MISO,
+                    FrontendStatusType::STANDARD_EXT,
             };
             break;
         }
@@ -96,6 +97,7 @@
                     FrontendStatusType::TRANSMISSION_MODE,
                     FrontendStatusType::T2_SYSTEM_ID,
                     FrontendStatusType::DVBT_CELL_IDS,
+                    FrontendStatusType::STANDARD_EXT,
             };
             break;
         }
@@ -985,6 +987,17 @@
                 status.set<FrontendStatus::iptvAverageJitterMs>(5);
                 break;
             }
+            case FrontendStatusType::STANDARD_EXT: {
+                FrontendStandardExt standardExt;
+                if (mType == FrontendType::DVBS) {
+                    standardExt.set<FrontendStandardExt::dvbsStandardExt>(
+                            FrontendDvbsStandard::S2X);
+                } else if (mType == FrontendType::DVBT) {
+                    standardExt.set<FrontendStandardExt::dvbtStandardExt>(FrontendDvbtStandard::T2);
+                }
+                status.set<FrontendStatus::standardExt>(standardExt);
+                break;
+            }
             default: {
                 continue;
             }
diff --git a/tv/tuner/aidl/vts/functional/FrontendTests.cpp b/tv/tuner/aidl/vts/functional/FrontendTests.cpp
index 85d0496..99c0283 100644
--- a/tv/tuner/aidl/vts/functional/FrontendTests.cpp
+++ b/tv/tuner/aidl/vts/functional/FrontendTests.cpp
@@ -636,7 +636,7 @@
     ASSERT_TRUE(tuneFrontend(frontendConf, false /*testWithDemux*/));
 
     // TODO: find a better way to push all frontend status types
-    for (int32_t i = 0; i <= static_cast<int32_t>(FrontendStatusType::ATSC3_ALL_PLP_INFO); i++) {
+    for (int32_t i = 0; i <= static_cast<int32_t>(FrontendStatusType::STANDARD_EXT); i++) {
         allTypes.push_back(static_cast<FrontendStatusType>(i));
     }