diff --git a/radio/aidl/compat/service/Android.bp b/radio/aidl/compat/service/Android.bp
new file mode 100644
index 0000000..f708b84
--- /dev/null
+++ b/radio/aidl/compat/service/Android.bp
@@ -0,0 +1,51 @@
+// 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.
+
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+cc_binary {
+    name: "android.hardware.radio-service.compat",
+    relative_install_path: "hw",
+    init_rc: ["radio-compat.rc"],
+    vintf_fragments: ["radio-compat.xml"],
+    vendor: true,
+    cflags: [
+        "-Wall",
+        "-Wextra",
+        "-DANDROID_UTILS_REF_BASE_DISABLE_IMPLICIT_CONSTRUCTION",
+    ],
+    shared_libs: [
+        "android.hardware.radio-library.compat",
+        "android.hardware.radio.config-V1-ndk",
+        "android.hardware.radio.config@1.0",
+        "android.hardware.radio.config@1.1",
+        "android.hardware.radio.config@1.2",
+        "android.hardware.radio.config@1.3",
+        "libbase",
+        "libbinder_ndk",
+        "libhidlbase",
+        "libutils",
+    ],
+    srcs: [
+        "hidl-utils.cpp",
+        "service.cpp",
+    ],
+}
diff --git a/radio/aidl/compat/service/hidl-utils.cpp b/radio/aidl/compat/service/hidl-utils.cpp
new file mode 100644
index 0000000..d894966
--- /dev/null
+++ b/radio/aidl/compat/service/hidl-utils.cpp
@@ -0,0 +1,36 @@
+/*
+ * 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.
+ */
+
+#include "hidl-utils.h"
+
+#include <android-base/logging.h>
+
+namespace android::hardware::hidl_utils {
+
+class HalDeathRecipient : public hidl_death_recipient {
+    void serviceDied(uint64_t /* cookie */, const wp<hidl::base::V1_0::IBase>& /* who */) override {
+        LOG(FATAL) << "One of the linked HALs died. Restarting...";
+    }
+};
+
+static const auto gHalDeathRecipient = sp<HalDeathRecipient>::make();
+
+void linkDeathToDeath(sp<::android::hidl::base::V1_0::IBase> hal) {
+    const auto linkStatus = hal->linkToDeath(gHalDeathRecipient, 0);
+    CHECK(linkStatus.withDefault(false)) << "Failed to link to HAL death";
+}
+
+}  // namespace android::hardware::hidl_utils
diff --git a/radio/aidl/compat/service/hidl-utils.h b/radio/aidl/compat/service/hidl-utils.h
new file mode 100644
index 0000000..3f81a9b
--- /dev/null
+++ b/radio/aidl/compat/service/hidl-utils.h
@@ -0,0 +1,30 @@
+/*
+ * 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 <android/hidl/base/1.0/IBase.h>
+
+namespace android::hardware::hidl_utils {
+
+/**
+ * Link to a given HALs death and restart the current process in such a case.
+ *
+ * \param hal HAL to which death to link
+ */
+void linkDeathToDeath(sp<hidl::base::V1_0::IBase> hal);
+
+}  // namespace android::hardware::hidl_utils
diff --git a/radio/aidl/compat/service/radio-compat.rc b/radio/aidl/compat/service/radio-compat.rc
new file mode 100644
index 0000000..a159876
--- /dev/null
+++ b/radio/aidl/compat/service/radio-compat.rc
@@ -0,0 +1,4 @@
+service vendor.radio-compat /vendor/bin/hw/android.hardware.radio-service.compat
+    class hal
+    user nobody
+    group system
diff --git a/radio/aidl/compat/service/radio-compat.xml b/radio/aidl/compat/service/radio-compat.xml
new file mode 100644
index 0000000..60f8ff5
--- /dev/null
+++ b/radio/aidl/compat/service/radio-compat.xml
@@ -0,0 +1,6 @@
+<manifest version="1.0" type="device">
+    <hal format="aidl">
+        <name>android.hardware.radio.config</name>
+        <fqname>IRadioConfig/default</fqname>
+    </hal>
+</manifest>
diff --git a/radio/aidl/compat/service/service.cpp b/radio/aidl/compat/service/service.cpp
new file mode 100644
index 0000000..c177dd1
--- /dev/null
+++ b/radio/aidl/compat/service/service.cpp
@@ -0,0 +1,60 @@
+/*
+ * 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.
+ */
+
+#include "hidl-utils.h"
+
+#include <android-base/logging.h>
+#include <android/binder_manager.h>
+#include <android/binder_process.h>
+#include <libradiocompat/RadioConfig.h>
+
+namespace android::hardware::radio::service {
+
+using namespace std::string_literals;
+
+static std::vector<std::shared_ptr<ndk::ICInterface>> gPublishedHals;
+
+static void publishRadioConfig() {
+    auto hidlHal = config::V1_1::IRadioConfig::getService();
+    CHECK(hidlHal) << "HIDL IRadioConfig not present in VINTF";
+
+    hidl_utils::linkDeathToDeath(hidlHal);
+
+    auto aidlHal = ndk::SharedRefBase::make<compat::RadioConfig>(hidlHal);
+    gPublishedHals.push_back(aidlHal);
+    const auto instance = compat::RadioConfig::descriptor + "/default"s;
+    const auto status = AServiceManager_addService(aidlHal->asBinder().get(), instance.c_str());
+    CHECK_EQ(status, STATUS_OK);
+}
+
+static void main() {
+    base::SetDefaultTag("radiocompat");
+    base::SetMinimumLogSeverity(base::VERBOSE);
+    LOG(DEBUG) << "Radio HAL compat service starting...";
+
+    publishRadioConfig();
+
+    LOG(DEBUG) << "Radio HAL compat service is operational";
+    ABinderProcess_joinThreadPool();
+    LOG(FATAL) << "Radio HAL compat service has stopped";
+}
+
+}  // namespace android::hardware::radio::service
+
+int main() {
+    android::hardware::radio::service::main();
+    return EXIT_FAILURE;  // should not reach
+}