diff --git a/radio/1.6/IRadioResponse.hal b/radio/1.6/IRadioResponse.hal
index 0f08a46..3b2061f 100644
--- a/radio/1.6/IRadioResponse.hal
+++ b/radio/1.6/IRadioResponse.hal
@@ -22,6 +22,7 @@
 import @1.6::RegStateResult;
 import @1.6::RadioResponseInfo;
 import @1.6::SetupDataCallResult;
+import @1.6::SignalStrength;
 
 /**
  * Interface declaring response functions to solicited radio requests.
@@ -344,6 +345,19 @@
     oneway getCellInfoListResponse_1_6(RadioResponseInfo info, vec<CellInfo> cellInfo);
 
     /**
+     * This is identical to getSignalStrengthResponse_1_4 but uses an updated version of
+     * SignalStrength.
+     *
+     * @param signalStrength Current signal strength
+     *
+     * Valid errors returned:
+     *   RadioError:NONE
+     *   RadioError:RADIO_NOT_AVAILABLE
+     *   RadioError:INTERNAL_ERR
+     */
+    oneway getSignalStrengthResponse_1_6(RadioResponseInfo info, SignalStrength signalStrength);
+
+    /**
      * @param info Response info struct containing response type, serial no. and error
      * @param voiceRegResponse Current Voice registration response as defined by RegStateResult
      *        in types.hal