diff --git a/src/com/android/phone/ServiceStateProvider.java b/src/com/android/phone/ServiceStateProvider.java
index 13d1c3a..32562fa 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.DATA_REG_STATE;
 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;
@@ -63,18 +64,6 @@
     public static final String SERVICE_STATE = "service_state";
 
     /**
-     * An integer value indicating the current data service state.
-     * <p>
-     * Valid values: {@link ServiceState#STATE_IN_SERVICE},
-     * {@link ServiceState#STATE_OUT_OF_SERVICE}, {@link ServiceState#STATE_EMERGENCY_ONLY},
-     * {@link ServiceState#STATE_POWER_OFF}.
-     * <p>
-     * This is the same as {@link ServiceState#getDataRegState()}.
-     * @hide
-     */
-    public static final String DATA_REG_STATE = "data_reg_state";
-
-    /**
      * An integer value indicating the current voice roaming type.
      * <p>
      * This is the same as {@link ServiceState#getVoiceRoamingType()}.
diff --git a/tests/src/com/android/phone/ServiceStateProviderTest.java b/tests/src/com/android/phone/ServiceStateProviderTest.java
index de47153..d85976a 100644
--- a/tests/src/com/android/phone/ServiceStateProviderTest.java
+++ b/tests/src/com/android/phone/ServiceStateProviderTest.java
@@ -64,7 +64,7 @@
     private final String[] mTestProjection =
     {
         ServiceStateTable.VOICE_REG_STATE,
-        ServiceStateProvider.DATA_REG_STATE,
+        ServiceStateTable.DATA_REG_STATE,
         ServiceStateProvider.VOICE_OPERATOR_ALPHA_LONG,
         ServiceStateProvider.VOICE_OPERATOR_ALPHA_SHORT,
         ServiceStateTable.VOICE_OPERATOR_NUMERIC,
@@ -327,6 +327,28 @@
         assertTrue(notifyChangeCalledForSubIdAndField(oldSS, newSS, subId));
     }
 
+    @Test
+    @SmallTest
+    public void testNotifyChanged_dataRegStateUpdated() {
+        int subId = 0;
+
+        ServiceState oldSS = new ServiceState();
+        oldSS.setStateOutOfService();
+        oldSS.setDataRegState(ServiceState.STATE_OUT_OF_SERVICE);
+
+        ServiceState newSS = new ServiceState();
+        newSS.setStateOutOfService();
+        newSS.setDataRegState(ServiceState.STATE_POWER_OFF);
+
+        // Test that notifyChange is called by notifyChangeForSubId
+        // when the data_reg_state changes
+        assertTrue(notifyChangeCalledForSubId(oldSS, newSS, subId));
+
+        // Test that notifyChange is called by notifyChangeForSubIdAndField
+        // when the data_reg_state changes
+        assertTrue(notifyChangeCalledForSubIdAndField(oldSS, newSS, subId));
+    }
+
     // Check if notifyChange was called by notifyChangeForSubId
     private boolean notifyChangeCalledForSubId(ServiceState oldSS,
             ServiceState newSS, int subId) {