diff --git a/radio/1.6/IRadio.hal b/radio/1.6/IRadio.hal
index eb20542..747b2f2 100644
--- a/radio/1.6/IRadio.hal
+++ b/radio/1.6/IRadio.hal
@@ -21,6 +21,7 @@
 import @1.0::GsmSmsMessage;
 import @1.1::CardPowerState;
 import @1.2::DataRequestReason;
+import @1.4::RadioAccessFamily;
 import @1.5::IRadio;
 import @1.5::AccessNetwork;
 import @1.5::DataProfileInfo;
@@ -305,4 +306,18 @@
      * Response function is IRadioResponse.cancelHandoverResponse()
      */
     oneway cancelHandover(int32_t serial, int32_t callId);
+
+    /**
+     * Requests to set the network type for searching and registering.
+     *
+     * Instruct the radio to *only* accept the types of network provided. This
+     * is stronger than setPreferredNetworkType which is a suggestion.
+     *
+     * @param serial Serial number of request.
+     * @param networkTypeBitmap a 32-bit bearer bitmap of RadioAccessFamily
+     *
+     * Response callbask is IRadioResponse.setNetworkTypeBitmapResponse()
+     */
+    oneway setAllowedNetworkTypeBitmap(
+            uint32_t serial, bitfield<RadioAccessFamily> networkTypeBitmap);
 };
diff --git a/radio/1.6/IRadioResponse.hal b/radio/1.6/IRadioResponse.hal
index 07322be..523185e 100644
--- a/radio/1.6/IRadioResponse.hal
+++ b/radio/1.6/IRadioResponse.hal
@@ -290,4 +290,20 @@
      *   RadioError:INVALID_CALL_ID
      */
     oneway cancelHandoverResponse(RadioResponseInfo info);
+
+    /**
+     * Callback of IRadio.setAllowedNetworkTypeBitmap(int, bitfield<RadioAccessFamily>)
+     *
+     * Valid errors returned:
+     *   RadioError:NONE
+     *   RadioError:RADIO_NOT_AVAILABLE
+     *   RadioError:OPERATION_NOT_ALLOWED
+     *   RadioError:MODE_NOT_SUPPORTED
+     *   RadioError:INTERNAL_ERR
+     *   RadioError:INVALID_ARGUMENTS
+     *   RadioError:MODEM_ERR
+     *   RadioError:REQUEST_NOT_SUPPORTED
+     *   RadioError:NO_RESOURCES
+     */
+    oneway setAllowedNetworkTypeBitmapResponse(RadioResponseInfo info);
 };
diff --git a/radio/1.6/vts/functional/radio_hidl_hal_utils_v1_6.h b/radio/1.6/vts/functional/radio_hidl_hal_utils_v1_6.h
index 850425d..5682f11 100644
--- a/radio/1.6/vts/functional/radio_hidl_hal_utils_v1_6.h
+++ b/radio/1.6/vts/functional/radio_hidl_hal_utils_v1_6.h
@@ -58,7 +58,7 @@
 class RadioHidlTest_v1_6;
 extern ::android::hardware::radio::V1_5::CardStatus cardStatus;
 
-/* Callback class for radio response v1_5 */
+/* Callback class for radio response v1_6 */
 class RadioResponse_v1_6 : public ::android::hardware::radio::V1_6::IRadioResponse {
   protected:
     RadioHidlTest_v1_6& parent_v1_6;
@@ -789,6 +789,9 @@
 
     Return<void> cancelHandoverResponse(
             const ::android::hardware::radio::V1_6::RadioResponseInfo& info);
+
+    Return<void> setAllowedNetworkTypeBitmapResponse(
+            const ::android::hardware::radio::V1_6::RadioResponseInfo& info);
 };
 
 /* Callback class for radio indication */
diff --git a/radio/1.6/vts/functional/radio_response.cpp b/radio/1.6/vts/functional/radio_response.cpp
index fc56947..dc4f57d 100644
--- a/radio/1.6/vts/functional/radio_response.cpp
+++ b/radio/1.6/vts/functional/radio_response.cpp
@@ -1149,3 +1149,10 @@
     parent_v1_6.notify(info.serial);
     return Void();
 }
+
+Return<void> RadioResponse_v1_6::setAllowedNetworkTypeBitmapResponse(
+        const ::android::hardware::radio::V1_6::RadioResponseInfo& info) {
+    rspInfo = info;
+    parent_v1_6.notify(info.serial);
+    return Void();
+}