diff --git a/res/values/attrs.xml b/res/values/attrs.xml
index 8d84baf..fca8acf 100644
--- a/res/values/attrs.xml
+++ b/res/values/attrs.xml
@@ -15,21 +15,6 @@
 -->
 
 <resources>
-    <!-- Base attributes available to CheckBoxPreference. Copied from frameworks/base/core/res. -->
-    <declare-styleable name="CheckBoxPreference">
-        <!-- The summary for the Preference in a PreferenceActivity screen when the
-             CheckBoxPreference is checked. If separate on/off summaries are not
-             needed, the summary attribute can be used instead. -->
-        <attr name="android:summaryOn" />
-        <!-- The summary for the Preference in a PreferenceActivity screen when the
-             CheckBoxPreference is unchecked. If separate on/off summaries are not
-             needed, the summary attribute can be used instead. -->
-        <attr name="android:summaryOff" />
-        <!-- The state (true for on, or false for off) that causes dependents to be disabled. By default,
-             dependents will be disabled when this is unchecked, so the value of this preference is false. -->
-        <attr name="android:disableDependentsState" />
-    </declare-styleable>
-
     <declare-styleable name="EditPhoneNumberPreference">
         <!-- The enable button text. -->
         <attr name="enableButtonText" format="string" />
diff --git a/src/com/android/phone/EditPhoneNumberPreference.java b/src/com/android/phone/EditPhoneNumberPreference.java
index 35af20d..74b8a45 100644
--- a/src/com/android/phone/EditPhoneNumberPreference.java
+++ b/src/com/android/phone/EditPhoneNumberPreference.java
@@ -136,9 +136,9 @@
         a.recycle();
 
         //get the summary settings, use CheckBoxPreference as the standard.
-        a = context.obtainStyledAttributes(attrs, R.styleable.CheckBoxPreference, 0, 0);
-        mSummaryOn = a.getString(R.styleable.CheckBoxPreference_summaryOn);
-        mSummaryOff = a.getString(R.styleable.CheckBoxPreference_summaryOff);
+        a = context.obtainStyledAttributes(attrs, android.R.styleable.CheckBoxPreference, 0, 0);
+        mSummaryOn = a.getString(android.R.styleable.CheckBoxPreference_summaryOn);
+        mSummaryOff = a.getString(android.R.styleable.CheckBoxPreference_summaryOff);
         a.recycle();
     }
 
diff --git a/src/com/android/phone/PhoneInterfaceManager.java b/src/com/android/phone/PhoneInterfaceManager.java
index 1873482..41a82bc 100755
--- a/src/com/android/phone/PhoneInterfaceManager.java
+++ b/src/com/android/phone/PhoneInterfaceManager.java
@@ -5604,24 +5604,15 @@
     }
 
     /**
-     * Get whether mobile data is enabled.
+     * Checks if the device is capable of mobile data by considering whether whether the
+     * user has enabled mobile data, whether the carrier has enabled mobile data, and
+     * whether the network policy allows data connections.
      *
-     * Comparable to {@link #isUserDataEnabled(int)}, this considers all factors deciding
-     * whether mobile data is actually enabled.
-     *
-     * Accepts either ACCESS_NETWORK_STATE, MODIFY_PHONE_STATE or carrier privileges.
-     *
-     * @return {@code true} if data is enabled else {@code false}
+     * @return {@code true} if the overall data connection is capable; {@code false} if not.
      */
     @Override
     public boolean isDataEnabled(int subId) {
-        try {
-            mApp.enforceCallingOrSelfPermission(android.Manifest.permission.ACCESS_NETWORK_STATE,
-                    null);
-        } catch (Exception e) {
-            TelephonyPermissions.enforceCallingOrSelfModifyPermissionOrCarrierPrivilege(
-                    mApp, subId, "isDataEnabled");
-        }
+        enforceReadPrivilegedPermission("isDataEnabled");
 
         final long identity = Binder.clearCallingIdentity();
         try {