diff --git a/src/com/android/phone/ServiceStateProvider.java b/src/com/android/phone/ServiceStateProvider.java
index 63bc600..13d1c3a 100644
--- a/src/com/android/phone/ServiceStateProvider.java
+++ b/src/com/android/phone/ServiceStateProvider.java
@@ -19,6 +19,7 @@
 import static android.provider.Telephony.ServiceStateTable;
 import static android.provider.Telephony.ServiceStateTable.CONTENT_URI;
 import static android.provider.Telephony.ServiceStateTable.DATA_NETWORK_TYPE;
+import static android.provider.Telephony.ServiceStateTable.DUPLEX_MODE;
 import static android.provider.Telephony.ServiceStateTable.IS_MANUAL_NETWORK_SELECTION;
 import static android.provider.Telephony.ServiceStateTable.VOICE_REG_STATE;
 import static android.provider.Telephony.ServiceStateTable.getUriForSubscriptionId;
@@ -259,6 +260,7 @@
         OPERATOR_ALPHA_LONG_RAW,
         OPERATOR_ALPHA_SHORT_RAW,
         DATA_NETWORK_TYPE,
+        DUPLEX_MODE,
     };
 
     @Override
@@ -395,6 +397,7 @@
             final String operator_alpha_long_raw = ss.getOperatorAlphaLongRaw();
             final String operator_alpha_short_raw = ss.getOperatorAlphaShortRaw();
             final int data_network_type = ss.getDataNetworkType();
+            final int duplex_mode = ss.getDuplexMode();
 
             return buildSingleRowResult(projection, sColumns, new Object[] {
                     voice_reg_state,
@@ -422,6 +425,7 @@
                     operator_alpha_long_raw,
                     operator_alpha_short_raw,
                     data_network_type,
+                    duplex_mode,
             });
         }
     }
diff --git a/tests/src/com/android/phone/ServiceStateProviderTest.java b/tests/src/com/android/phone/ServiceStateProviderTest.java
index 55fdada..de47153 100644
--- a/tests/src/com/android/phone/ServiceStateProviderTest.java
+++ b/tests/src/com/android/phone/ServiceStateProviderTest.java
@@ -86,6 +86,7 @@
         ServiceStateProvider.OPERATOR_ALPHA_LONG_RAW,
         ServiceStateProvider.OPERATOR_ALPHA_SHORT_RAW,
         ServiceStateTable.DATA_NETWORK_TYPE,
+        ServiceStateTable.DUPLEX_MODE,
     };
 
     // Exception used internally to verify if the Resolver#notifyChange has been called.
@@ -111,6 +112,15 @@
         mTestServiceStateForSubId1 = new ServiceState();
         mTestServiceStateForSubId1.setStateOff();
 
+        // Add NRI to trigger SS with non-default values (e.g. duplex mode)
+        NetworkRegistrationInfo nriWwan = new NetworkRegistrationInfo.Builder()
+                .setTransportType(AccessNetworkConstants.TRANSPORT_TYPE_WWAN)
+                .setAccessNetworkTechnology(TelephonyManager.NETWORK_TYPE_LTE)
+                .setDomain(NetworkRegistrationInfo.DOMAIN_PS)
+                .build();
+        mTestServiceStateForSubId1.addNetworkRegistrationInfo(nriWwan);
+        mTestServiceStateForSubId1.setChannelNumber(65536); // EutranBand.BAND_65, DUPLEX_MODE_FDD
+
         // Mock out the actual phone state
         ServiceStateProvider provider = new ServiceStateProvider() {
             @Override
@@ -196,6 +206,7 @@
         final String operatorAlphaLongRaw = ss.getOperatorAlphaLongRaw();
         final String operatorAlphaShortRaw = ss.getOperatorAlphaShortRaw();
         final int dataNetworkType = ss.getDataNetworkType();
+        final int duplexMode = ss.getDuplexMode();
 
         assertEquals(voiceRegState, cursor.getInt(0));
         assertEquals(dataRegState, cursor.getInt(1));
@@ -220,6 +231,7 @@
         assertEquals(operatorAlphaLongRaw, cursor.getString(20));
         assertEquals(operatorAlphaShortRaw, cursor.getString(21));
         assertEquals(dataNetworkType, cursor.getInt(22));
+        assertEquals(duplexMode, cursor.getInt(23));
     }
 
     /**