diff --git a/radio/1.2/Android.bp b/radio/1.2/Android.bp
index 48ac5a1..90b4841 100644
--- a/radio/1.2/Android.bp
+++ b/radio/1.2/Android.bp
@@ -44,6 +44,8 @@
         "PhysicalChannelConfig",
         "RadioConst",
         "ScanIntervalRange",
+        "SignalStrength",
+        "WcdmaSignalStrength",
     ],
     gen_java: true,
 }
diff --git a/radio/1.2/IRadioIndication.hal b/radio/1.2/IRadioIndication.hal
index a124557..3d93b98 100644
--- a/radio/1.2/IRadioIndication.hal
+++ b/radio/1.2/IRadioIndication.hal
@@ -34,7 +34,7 @@
      * Same information as returned by getCellInfoList() in 1.0::IRadio.
      *
      * @param type Type of radio indication
-     * @param records Current cell information known to radio
+     * @param records Current cell information
      */
      oneway cellInfoList_1_2(RadioIndicationType type, vec<CellInfo> records);
 
@@ -50,7 +50,7 @@
      * suppressed by @1.2::IRadio.setIndicationFilter_1_2().
      *
      * @param type Type of radio indication
-     * @param lce LinkCapacityEstimate information as defined in types.hal
+     * @param lce LinkCapacityEstimate
      */
     oneway currentLinkCapacityEstimate(RadioIndicationType type, LinkCapacityEstimate lce);
 
@@ -58,8 +58,16 @@
      * Indicates physical channel configurations.
      *
      * @param type Type of radio indication
-     * @param configs List of PhysicalChannelConfigs as defined in types.hal
+     * @param configs Vector of PhysicalChannelConfigs
      */
     oneway currentPhysicalChannelConfigs(RadioIndicationType type,
             vec<PhysicalChannelConfig> configs);
+
+    /**
+     * Indicates current signal strength of the radio.
+     *
+     * @param type Type of radio indication
+     * @param signalStrength SignalStrength information
+     */
+    oneway currentSignalStrength_1_2(RadioIndicationType type, SignalStrength signalStrength);
 };
diff --git a/radio/1.2/IRadioResponse.hal b/radio/1.2/IRadioResponse.hal
index 93ec4d7..fb362a0 100644
--- a/radio/1.2/IRadioResponse.hal
+++ b/radio/1.2/IRadioResponse.hal
@@ -88,4 +88,14 @@
      *   RadioError:CANCELLED
      */
     oneway getCurrentCallsResponse_1_2(RadioResponseInfo info, vec<Call> calls);
+
+    /**
+     * @param sigStrength Current signal strength
+     *
+     * Valid errors returned:
+     *   RadioError:NONE
+     *   RadioError:RADIO_NOT_AVAILABLE
+     *   RadioError:INTERNAL_ERR
+     */
+    oneway getSignalStrengthResponse_1_2(RadioResponseInfo info, SignalStrength sigStrength);
 };
diff --git a/radio/1.2/types.hal b/radio/1.2/types.hal
index c353645..9723326 100644
--- a/radio/1.2/types.hal
+++ b/radio/1.2/types.hal
@@ -17,9 +17,9 @@
 package android.hardware.radio@1.2;
 
 import @1.0::Call;
-import @1.0::CdmaSignalStrength;
 import @1.0::CardState;
 import @1.0::CardStatus;
+import @1.0::CdmaSignalStrength;
 import @1.0::CellIdentityCdma;
 import @1.0::CellIdentityGsm;
 import @1.0::CellIdentityLte;
@@ -30,10 +30,12 @@
 import @1.0::GsmSignalStrength;
 import @1.0::LteSignalStrength;
 import @1.0::RadioConst;
+import @1.0::RadioError;
+import @1.0::SignalStrength;
+import @1.0::TdScdmaSignalStrength;
 import @1.0::TimeStampType;
 import @1.0::WcdmaSignalStrength;
 import @1.1::RadioAccessSpecifier;
-import @1.0::RadioError;
 import @1.1::ScanStatus;
 import @1.1::ScanType;
 
@@ -397,3 +399,27 @@
     @1.0::Call base;
     AudioQuality audioQuality;
 };
+
+struct WcdmaSignalStrength {
+    @1.0::WcdmaSignalStrength base;
+    /**
+     * CPICH RSCP as defined in TS 25.215 5.1.1
+     * Valid values are (0-96, 255) as defined in TS 27.007 8.69
+     */
+    uint32_t rscp;
+    /**
+     * Ec/No value as defined in TS 25.215 5.1.5
+     * Valid values are (0-49, 255) as defined in TS 27.007 8.69
+     */
+    uint32_t ecno;
+
+};
+
+struct SignalStrength {
+    GsmSignalStrength gsm;
+    CdmaSignalStrength cdma;
+    EvdoSignalStrength evdo;
+    LteSignalStrength lte;
+    TdScdmaSignalStrength tdScdma;
+    WcdmaSignalStrength wcdma;
+};