diff --git a/radio/config/1.0/IRadioConfigResponse.hal b/radio/config/1.0/IRadioConfigResponse.hal
new file mode 100644
index 0000000..917fda1
--- /dev/null
+++ b/radio/config/1.0/IRadioConfigResponse.hal
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2018 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.config@1.0;
+
+import android.hardware.radio@1.0::RadioResponseInfo;
+
+/**
+ * Interface declaring response functions to solicited radio config requests.
+ */
+interface IRadioConfigResponse {
+
+    /**
+     * @param info Response info struct containing response type, serial no. and error
+     * @param slotStatus Sim slot struct containing all the physical SIM slots info with size
+      *       equals to the number of physical slots on the device
+     *
+     * Valid errors returned:
+     *   RadioError:NONE
+     *   RadioError:RADIO_NOT_AVAILABLE
+     *   RadioError:NO_MEMORY
+     *   RadioError:INTERNAL_ERR
+     *   RadioError:MODEM_ERR
+     */
+    oneway getSimSlotsStatusResponse(RadioResponseInfo info, vec<SimSlotStatus> slotStatus);
+
+    /**
+     * @param info Response info struct containing response type, serial no. and error
+     *
+     * Valid errors returned:
+     *   RadioError:NONE
+     *   RadioError:RADIO_NOT_AVAILABLE
+     *   RadioError:NO_MEMORY
+     *   RadioError:INTERNAL_ERR
+     *   RadioError:MODEM_ERR
+     *   RadioError:INVALID_ARGUMENTS
+     */
+    oneway setSimSlotsMappingResponse(RadioResponseInfo info);
+};