diff --git a/radio/1.0/ISapCallback.hal b/radio/1.0/ISapCallback.hal
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+++ b/radio/1.0/ISapCallback.hal
@@ -0,0 +1,151 @@
+/*
+ * Copyright (C) 2016 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.radio@1.0;
+
+interface ISapCallback {
+    /**
+     * CONNECT_RESP from SAP 1.1 spec 5.1.2
+     *
+     * @param token Id to match req-resp. Value must match the one in req.
+     * @param sapConnectRsp Connection Status
+     * @param maxMsgSize MaxMsgSize supported by server if request cannot be fulfilled.
+     *        Valid only if connectResponse is SapConnectResponse:MSG_SIZE_TOO_LARGE.
+     */
+    oneway connectResponse(int32_t token, SapConnectRsp sapConnectRsp, int32_t maxMsgSize);
+
+    /**
+     * DISCONNECT_RESP from SAP 1.1 spec 5.1.4
+     *
+     * @param token Id to match req-resp. Value must match the one in req.
+     */
+    oneway disconnectResponse(int32_t token);
+
+    /**
+     * DISCONNECT_IND from SAP 1.1 spec 5.1.5
+     *
+     * @param token Id to match req-resp. Value must match the one in req.
+     * @param disconnectType Disconnect Type to indicate if shutdown is graceful or immediate
+     */
+    oneway disconnectIndication(int32_t token, SapDisconnectType disconnectType);
+
+    /**
+     * TRANSFER_APDU_RESP from SAP 1.1 spec 5.1.7
+     *
+     * @param token Id to match req-resp. Value must match the one in req.
+     * @param type APDU command type
+     * @param resultCode ResultCode to indicate if command was processed correctly
+     *        Possible values:
+     *        SapResultCode:SUCCESS,
+     *        SapResultCode:GENERIC_FAILURE,
+     *        SapResultCode:CARD_NOT_ACCESSSIBLE,
+     *        SapResultCode:CARD_ALREADY_POWERED_OFF,
+     *        SapResultCode:CARD_REMOVED
+     * @param apduRsp APDU Response. Valid only if command was processed correctly and no error
+     *        occurred.
+     */
+    oneway apduResponse(int32_t token,
+                        SapApduType type,
+                        SapResultCode resultCode,
+                        vec<uint8_t> apduRsp);
+
+    /**
+     * TRANSFER_ATR_RESP from SAP 1.1 spec 5.1.9
+     *
+     * @param token Id to match req-resp. Value must match the one in req.
+     * @param resultCode ResultCode to indicate if command was processed correctly
+     *        Possible values:
+     *        SapResultCode:SUCCESS,
+     *        SapResultCode:GENERIC_FAILURE,
+     *        SapResultCode:CARD_ALREADY_POWERED_OFF,
+     *        SapResultCode:CARD_REMOVED,
+     *        SapResultCode:DATA_NOT_AVAILABLE
+     * @param atr Answer to Reset from the subscription module. Included only if no error occurred,
+     *        otherwise empty.
+     */
+    oneway transferAtrResponse(int32_t token, SapResultCode resultCode, vec<uint8_t> atr);
+
+    /**
+     * POWER_SIM_OFF_RESP and POWER_SIM_ON_RESP from SAP 1.1 spec 5.1.11 + 5.1.13
+     *
+     * @param token Id to match req-resp. Value must match the one in req.
+     * @param resultCode ResultCode to indicate if command was processed correctly
+     *        Possible values:
+     *        SapResultCode:SUCCESS,
+     *        SapResultCode:GENERIC_FAILURE,
+     *        SapResultCode:CARD_NOT_ACCESSSIBLE, (possible only for power on req)
+     *        SapResultCode:CARD_ALREADY_POWERED_OFF, (possible only for power off req)
+     *        SapResultCode:CARD_REMOVED,
+     *        SapResultCode:CARD_ALREADY_POWERED_ON (possible only for power on req)
+     */
+    oneway powerResponse(int32_t token, SapResultCode resultCode);
+
+    /**
+     * RESET_SIM_RESP from SAP 1.1 spec 5.1.15
+     *
+     * @param token Id to match req-resp. Value must match the one in req.
+     * @param resultCode ResultCode to indicate if command was processed correctly
+     *        Possible values:
+     *        SapResultCode:SUCCESS,
+     *        SapResultCode:GENERIC_FAILURE,
+     *        SapResultCode:CARD_NOT_ACCESSSIBLE,
+     *        SapResultCode:CARD_ALREADY_POWERED_OFF,
+     *        SapResultCode:CARD_REMOVED
+     */
+    oneway resetSimResponse(int32_t token, SapResultCode resultCode);
+
+    /**
+     * STATUS_IND from SAP 1.1 spec 5.1.16
+     *
+     * @param token Id to match req-resp. Value must match the one in req.
+     * @param status Parameter to indicate reason for the status change.
+     */
+    oneway statusIndication(int32_t token, SapStatus status);
+
+    /**
+     * TRANSFER_CARD_READER_STATUS_REQ from SAP 1.1 spec 5.1.18
+     *
+     * @param token Id to match req-resp. Value must match the one in req.
+     * @param resultCode ResultCode to indicate if command was processed correctly
+     *        Possible values:
+     *        SapResultCode:SUCCESS,
+     *        SapResultCode:GENERIC_FAILURE
+     *        SapResultCode:CARD_ALREADY_POWERED_ON
+     * @param cardReaderStatus Card Reader Status coded as described in 3GPP TS 11.14 Section 12.33
+     *        and TS 31.111 Section 8.33
+     */
+    oneway transferCardReaderStatusResponse(int32_t token,
+                                            SapResultCode resultCode,
+                                            int32_t cardReaderStatus);
+
+    /**
+     * ERROR_RESP from SAP 1.1 spec 5.1.19
+     *
+     * @param token Id to match req-resp. Value must match the one in req.
+     */
+    oneway errorResponse(int32_t token);
+
+    /**
+     * SET_TRANSPORT_PROTOCOL_RESP from SAP 1.1 spec 5.1.21
+     *
+     * @param token Id to match req-resp. Value must match the one in req.
+     * @param resultCode ResultCode to indicate if command was processed correctly
+     *        Possible values:
+     *        SapResultCode:SUCCESS
+     *        SapResultCode:NOT_SUPPORTED
+     */
+    oneway transferProtocolResponse(int32_t token, SapResultCode resultCode);
+};
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