diff --git a/radio/1.2/default/Sap.h b/radio/1.2/default/Sap.h
new file mode 100644
index 0000000..033e877
--- /dev/null
+++ b/radio/1.2/default/Sap.h
@@ -0,0 +1,61 @@
+/*
+ * Copyright (C) 2018 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.1 (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-2.1
+ *
+ * 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.
+ */
+#ifndef ANDROID_HARDWARE_RADIO_V1_2_SAP_H
+#define ANDROID_HARDWARE_RADIO_V1_2_SAP_H
+
+#include <android/hardware/radio/1.2/ISap.h>
+#include <hidl/MQDescriptor.h>
+#include <hidl/Status.h>
+
+namespace android {
+namespace hardware {
+namespace radio {
+namespace V1_2 {
+namespace implementation {
+
+using ::android::hardware::hidl_array;
+using ::android::hardware::hidl_memory;
+using ::android::hardware::hidl_string;
+using ::android::hardware::hidl_vec;
+using ::android::hardware::Return;
+using ::android::hardware::Void;
+using ::android::sp;
+
+struct Sap : public ISap {
+    sp<::android::hardware::radio::V1_0::ISapCallback> mSapCallback;
+    // Methods from ::android::hardware::radio::V1_0::ISap follow.
+    Return<void> setCallback(
+        const sp<::android::hardware::radio::V1_0::ISapCallback>& sapCallback) override;
+    Return<void> connectReq(int32_t token, int32_t maxMsgSize) override;
+    Return<void> disconnectReq(int32_t token) override;
+    Return<void> apduReq(int32_t token, ::android::hardware::radio::V1_0::SapApduType type,
+                         const hidl_vec<uint8_t>& command) override;
+    Return<void> transferAtrReq(int32_t token) override;
+    Return<void> powerReq(int32_t token, bool state) override;
+    Return<void> resetSimReq(int32_t token) override;
+    Return<void> transferCardReaderStatusReq(int32_t token) override;
+    Return<void> setTransferProtocolReq(
+        int32_t token,
+        ::android::hardware::radio::V1_0::SapTransferProtocol transferProtocol) override;
+};
+
+}  // namespace implementation
+}  // namespace V1_2
+}  // namespace radio
+}  // namespace hardware
+}  // namespace android
+
+#endif  // ANDROID_HARDWARE_RADIO_V1_2_SAP_H