diff --git a/src/com/android/dialer/CallDetailActivity.java b/src/com/android/dialer/CallDetailActivity.java
index 87ec774..15ba5df 100644
--- a/src/com/android/dialer/CallDetailActivity.java
+++ b/src/com/android/dialer/CallDetailActivity.java
@@ -77,8 +77,6 @@
     public static final String EXTRA_CALL_LOG_IDS = "EXTRA_CALL_LOG_IDS";
     /** If we are started with a voicemail, we'll find the uri to play with this extra. */
     public static final String EXTRA_VOICEMAIL_URI = "EXTRA_VOICEMAIL_URI";
-    /** If we should immediately start playback of the voicemail, this extra will be set to true. */
-    public static final String EXTRA_VOICEMAIL_START_PLAYBACK = "EXTRA_VOICEMAIL_START_PLAYBACK";
     /** If the activity was triggered from a notification. */
     public static final String EXTRA_FROM_NOTIFICATION = "EXTRA_FROM_NOTIFICATION";
 
diff --git a/src/com/android/dialer/calllog/IntentProvider.java b/src/com/android/dialer/calllog/IntentProvider.java
index d7a35e8..a11d00b 100644
--- a/src/com/android/dialer/calllog/IntentProvider.java
+++ b/src/com/android/dialer/calllog/IntentProvider.java
@@ -83,24 +83,6 @@
         };
     }
 
-    public static IntentProvider getPlayVoicemailIntentProvider(final long rowId,
-            final String voicemailUri) {
-        return new IntentProvider() {
-            @Override
-            public Intent getIntent(Context context) {
-                Intent intent = new Intent(context, CallDetailActivity.class);
-                intent.setData(ContentUris.withAppendedId(
-                        Calls.CONTENT_URI_WITH_VOICEMAIL, rowId));
-                if (voicemailUri != null) {
-                    intent.putExtra(CallDetailActivity.EXTRA_VOICEMAIL_URI,
-                            Uri.parse(voicemailUri));
-                }
-                intent.putExtra(CallDetailActivity.EXTRA_VOICEMAIL_START_PLAYBACK, true);
-                return intent;
-            }
-        };
-    }
-
     public static IntentProvider getSendSmsIntentProvider(final String number) {
         return new IntentProvider() {
             @Override
@@ -129,7 +111,6 @@
                     intent.putExtra(CallDetailActivity.EXTRA_VOICEMAIL_URI,
                             Uri.parse(voicemailUri));
                 }
-                intent.putExtra(CallDetailActivity.EXTRA_VOICEMAIL_START_PLAYBACK, false);
 
                 if (extraIds != null && extraIds.length > 0) {
                     intent.putExtra(CallDetailActivity.EXTRA_CALL_LOG_IDS, extraIds);
diff --git a/src/com/android/dialer/settings/SoundSettingsFragment.java b/src/com/android/dialer/settings/SoundSettingsFragment.java
index 43297b5..c7bb2d3 100644
--- a/src/com/android/dialer/settings/SoundSettingsFragment.java
+++ b/src/com/android/dialer/settings/SoundSettingsFragment.java
@@ -28,6 +28,7 @@
 import android.preference.PreferenceFragment;
 import android.preference.PreferenceScreen;
 import android.provider.Settings;
+import android.telephony.CarrierConfigManager;
 import android.telephony.TelephonyManager;
 
 import com.android.dialer.R;
@@ -208,8 +209,9 @@
     }
 
     private boolean shouldHideCarrierSettings() {
-        int hideCarrierNetworkSetting = Settings.Global.getInt(getActivity().getContentResolver(),
-                Settings.Global.HIDE_CARRIER_NETWORK_SETTINGS, SHOW_CARRIER_SETTINGS);
-        return hideCarrierNetworkSetting == HIDE_CARRIER_SETTINGS;
+        CarrierConfigManager configManager = (CarrierConfigManager) getActivity().getSystemService(
+                Context.CARRIER_CONFIG_SERVICE);
+        return configManager.getConfig().getBoolean(
+                CarrierConfigManager.KEY_HIDE_CARRIER_NETWORK_SETTINGS_BOOL);
     }
 }