packages/SystemUI/res/values/config.xml

<?xml version="1.0" encoding="utf-8"?>
<!--
/*
** Copyright 2009, The Android Open Source Project
**
** Licensed under the Apache License, Version 2.0 (the "License"); 
** you may not use this file except in compliance with the License. 
** You may obtain a copy of the License at 
**
**     http://www.apache.org/licenses/LICENSE-2.0 
**
** Unless required by applicable law or agreed to in writing, software 
** distributed under the License is distributed on an "AS IS" BASIS, 
** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
** See the License for the specific language governing permissions and 
** limitations under the License.
*/
-->

<!-- These resources are around just to allow their values to be customized
     for different hardware and product builds. -->
<resources>

    <!-- Control whether status bar should distinguish HSPA data icon form UMTS
    data icon on devices -->
    <bool name="config_hspa_data_distinguishable">false</bool>

    <!-- Component to be used as the status bar service.  Must implement the IStatusBar
     interface.  This name is in the ComponentName flattened format (package/class)  -->
    <string name="config_statusBarComponent" translatable="false">com.android.systemui.statusbar.phone.PhoneStatusBar</string>

    <!-- Component to be used as the system bar service.  Must implement the IStatusBar
     interface.  This name is in the ComponentName flattened format (package/class)  -->
    <string name="config_systemBarComponent" translatable="false">com.android.systemui.statusbar.tablet.TabletStatusBar</string>

    <!-- Whether or not we show the number in the bar. -->
    <bool name="config_statusBarShowNumber">true</bool>

</resources>