diff --git a/radio/aidl/compat/libradiocompat/config/RadioConfig.cpp b/radio/aidl/compat/libradiocompat/config/RadioConfig.cpp
index b450418..837c626 100644
--- a/radio/aidl/compat/libradiocompat/config/RadioConfig.cpp
+++ b/radio/aidl/compat/libradiocompat/config/RadioConfig.cpp
@@ -62,6 +62,13 @@
     return ok();
 }
 
+ScopedAStatus RadioConfig::getSimultaneousCallingSupport(int32_t serial) {
+    LOG_CALL << serial;
+    LOG(ERROR) << " getSimultaneousCallingSupport is unsupported by HIDL HALs";
+    respond()->getSimultaneousCallingSupportResponse(notSupported(serial), {});
+    return ok();
+}
+
 ScopedAStatus RadioConfig::getSimSlotsStatus(int32_t serial) {
     LOG_CALL << serial;
     mHal1_1->getSimSlotsStatus(serial);
diff --git a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioConfig.h b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioConfig.h
index 89ddea0..17d5985 100644
--- a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioConfig.h
+++ b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioConfig.h
@@ -42,6 +42,7 @@
     ::ndk::ScopedAStatus getHalDeviceCapabilities(int32_t serial) override;
     ::ndk::ScopedAStatus getNumOfLiveModems(int32_t serial) override;
     ::ndk::ScopedAStatus getPhoneCapability(int32_t serial) override;
+    ::ndk::ScopedAStatus getSimultaneousCallingSupport(int32_t serial) override;
     ::ndk::ScopedAStatus getSimSlotsStatus(int32_t serial) override;
     ::ndk::ScopedAStatus setNumOfLiveModems(int32_t serial, int8_t numOfLiveModems) override;
     ::ndk::ScopedAStatus setPreferredDataModem(int32_t serial, int8_t modemId) override;