diff --git a/gnss/aidl/default/AGnssRil.cpp b/gnss/aidl/default/AGnssRil.cpp
new file mode 100644
index 0000000..afe0039
--- /dev/null
+++ b/gnss/aidl/default/AGnssRil.cpp
@@ -0,0 +1,58 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+
+#define LOG_TAG "AGnssRilAidl"
+
+#include "AGnssRil.h"
+#include <inttypes.h>
+#include <log/log.h>
+
+namespace aidl::android::hardware::gnss {
+
+std::shared_ptr<IAGnssRilCallback> AGnssRil::sCallback = nullptr;
+
+ndk::ScopedAStatus AGnssRil::setCallback(const std::shared_ptr<IAGnssRilCallback>& callback) {
+    ALOGD("AGnssRil::setCallback");
+    std::unique_lock<std::mutex> lock(mMutex);
+    sCallback = callback;
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus AGnssRil::setRefLocation(const AGnssRefLocation& agnssReflocation) {
+    const AGnssRefLocationCellID& cellInfo = agnssReflocation.cellID;
+    ALOGD("AGnssRil::setRefLocation: type: %s, mcc: %d, mnc: %d, lac: %d, cid: %" PRId64
+          ", tac: %d, pcid: "
+          "%d, arfcn: %d",
+          toString(agnssReflocation.type).c_str(), cellInfo.mcc, cellInfo.mnc, cellInfo.lac,
+          cellInfo.cid, cellInfo.tac, cellInfo.pcid, cellInfo.arfcn);
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus AGnssRil::setSetId(SetIDType type, const std::string& setid) {
+    ALOGD("AGnssRil::setSetId: type:%s, setid: %s", toString(type).c_str(), setid.c_str());
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus AGnssRil::updateNetworkState(const NetworkAttributes& attributes) {
+    ALOGD("AGnssRil::updateNetworkState: networkHandle:%" PRId64
+          ", isConnected: %d, capabilities: %d, "
+          "apn: %s",
+          attributes.networkHandle, attributes.isConnected, attributes.capabilities,
+          attributes.apn.c_str());
+    return ndk::ScopedAStatus::ok();
+}
+
+}  // namespace aidl::android::hardware::gnss
diff --git a/gnss/aidl/default/AGnssRil.h b/gnss/aidl/default/AGnssRil.h
new file mode 100644
index 0000000..7e429ee
--- /dev/null
+++ b/gnss/aidl/default/AGnssRil.h
@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2021 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.
+ */
+
+#pragma once
+
+#include <aidl/android/hardware/gnss/BnAGnssRil.h>
+
+namespace aidl::android::hardware::gnss {
+
+struct AGnssRil : public BnAGnssRil {
+  public:
+    ndk::ScopedAStatus setCallback(const std::shared_ptr<IAGnssRilCallback>& callback) override;
+    ndk::ScopedAStatus setRefLocation(const AGnssRefLocation& agnssReflocation) override;
+    ndk::ScopedAStatus setSetId(SetIDType type, const std::string& setid) override;
+    ndk::ScopedAStatus updateNetworkState(const NetworkAttributes& attributes) override;
+
+  private:
+    // Synchronization lock for sCallback
+    mutable std::mutex mMutex;
+    // Guarded by mMutex
+    static std::shared_ptr<IAGnssRilCallback> sCallback;
+};
+
+}  // namespace aidl::android::hardware::gnss
diff --git a/gnss/aidl/default/Android.bp b/gnss/aidl/default/Android.bp
index 0031dcf..0707aaa 100644
--- a/gnss/aidl/default/Android.bp
+++ b/gnss/aidl/default/Android.bp
@@ -55,6 +55,7 @@
         "android.hardware.gnss-V2-ndk",
     ],
     srcs: [
+        "AGnssRil.cpp",
         "AGnss.cpp",
         "Gnss.cpp",
         "GnssAntennaInfo.cpp",
diff --git a/gnss/aidl/default/Gnss.cpp b/gnss/aidl/default/Gnss.cpp
index 2c6df99..5867fe7 100644
--- a/gnss/aidl/default/Gnss.cpp
+++ b/gnss/aidl/default/Gnss.cpp
@@ -20,6 +20,7 @@
 #include <inttypes.h>
 #include <log/log.h>
 #include "AGnss.h"
+#include "AGnssRil.h"
 #include "DeviceFileReader.h"
 #include "GnssAntennaInfo.h"
 #include "GnssBatching.h"
@@ -171,7 +172,7 @@
     return ScopedAStatus::ok();
 }
 
-ndk::ScopedAStatus Gnss::getExtensionAGnss(std::shared_ptr<IAGnss>* iAGnss) {
+ScopedAStatus Gnss::getExtensionAGnss(std::shared_ptr<IAGnss>* iAGnss) {
     ALOGD("Gnss::getExtensionAGnss");
     *iAGnss = SharedRefBase::make<AGnss>();
     return ndk::ScopedAStatus::ok();
@@ -183,6 +184,12 @@
     return ScopedAStatus::ok();
 }
 
+ScopedAStatus Gnss::getExtensionAGnssRil(std::shared_ptr<IAGnssRil>* iAGnssRil) {
+    ALOGD("Gnss::getExtensionAGnssRil");
+    *iAGnssRil = SharedRefBase::make<AGnssRil>();
+    return ndk::ScopedAStatus::ok();
+}
+
 ScopedAStatus Gnss::injectLocation(const GnssLocation& location) {
     ALOGD("injectLocation. lat:%lf, lng:%lf, acc:%f", location.latitudeDegrees,
           location.longitudeDegrees, location.horizontalAccuracyMeters);
diff --git a/gnss/aidl/default/Gnss.h b/gnss/aidl/default/Gnss.h
index b92f4fb..b1fdac4 100644
--- a/gnss/aidl/default/Gnss.h
+++ b/gnss/aidl/default/Gnss.h
@@ -17,6 +17,7 @@
 #pragma once
 
 #include <aidl/android/hardware/gnss/BnAGnss.h>
+#include <aidl/android/hardware/gnss/BnAGnssRil.h>
 #include <aidl/android/hardware/gnss/BnGnss.h>
 #include <aidl/android/hardware/gnss/BnGnssAntennaInfo.h>
 #include <aidl/android/hardware/gnss/BnGnssBatching.h>
@@ -66,6 +67,7 @@
     ndk::ScopedAStatus getExtensionGnssNavigationMessage(
             std::shared_ptr<IGnssNavigationMessageInterface>* iGnssNavigationMessage) override;
     ndk::ScopedAStatus getExtensionAGnss(std::shared_ptr<IAGnss>* iAGnss) override;
+    ndk::ScopedAStatus getExtensionAGnssRil(std::shared_ptr<IAGnssRil>* iAGnssRil) override;
     ndk::ScopedAStatus getExtensionGnssDebug(std::shared_ptr<IGnssDebug>* iGnssDebug) override;
     ndk::ScopedAStatus getExtensionGnssVisibilityControl(
             std::shared_ptr<android::hardware::gnss::visibility_control::IGnssVisibilityControl>*