Приложение Android работает на 2.2 устройствах, но не на 2.1 и ниже

Question

У меня интересная проблема.Пользователи, которые скачали мое приложение, сообщают, что оно не работает на устройствах Android с некоторыми устройствами 2.1.Я просмотрел весь свой код и не могу найти никаких ошибок.Ниже мой манифест код.Я что-то не так делаю?

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.CompanyName.AppName" 
        android:versionCode="5"
        android:versionName="5.5" 
        android:installLocation="auto">
    <uses-sdk android:minSdkVersion="4" 
        android:targetSdkVersion="13" />
            <application android:icon="@drawable/icon" 
            android:label="@string/app_name">
            <activity android:name=".AppName" 
                android:configChanges="keyboardHidden|orientation"
                android:label="@string/app_name" 
                android:hardwareAccelerated="true">
                <intent-filter>
                    <action android:name="android.intent.action.MAIN" />
                    <category android:name="android.intent.category.LAUNCHER" />
                </intent-filter>
            </activity>
            <activity android:name=".RunHTML5WebView"
                android:configChanges="keyboardHidden|orientation" 
                android:label="@string/app_name"
                android:hardwareAccelerated="true">
                <intent-filter>
                    <action android:name="android.intent.action.custom_screen" />
                    <category android:name="android.intent.category.LAUNCHER" />
                </intent-filter>
                </activity>

            <!-- Airpush Code Start -->
            <activity android:name="com.airpush.android.PushAds"
                android:configChanges="keyboardHidden|orientation" />
            <receiver android:name="com.airpush.android.UserDetailsReceiver" />
            <receiver android:name="com.airpush.android.MessageReceiver" />
            <receiver android:name="com.airpush.android.DeliveryReceiver" />
            <receiver android:name="com.CompanyName.AppName.BootReceiver">
                <intent-filter>
                    <action android:name="android.intent.action.BOOT_COMPLETED" />
                    <category android:name="android.intent.category.HOME" />
                </intent-filter>
            </receiver>
            <service android:name="com.airpush.android.PushService">
                <intent-filter>
                    <action android:name="com.airpush.android.PushServiceStart11500" />
                </intent-filter>
            </service>
            <!-- Airpush Code End -->

    </application>

    <!-- START Permissions -->
    <uses-permission android:name="android.permission.ACCESS_ASSISTED_GPS" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_DOWNLOAD_MANAGER" />
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_GPS" />
    <uses-permission android:name="android.permission.ACCESS_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_LOCATION_EXTRA_COMMANDS" />
    <uses-permission android:name="android.permission.ACCESS_MOCK_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
    <uses-permission android:name="android.permission.BIND_APPWIDGET" />
    <uses-permission android:name="android.permission.BIND_INPUT_METHOD" />
    <uses-permission android:name="android.permission.BLUETOOTH" />
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
    <uses-permission android:name="android.permission.CAMERA" />
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />
    <uses-permission android:name="android.permission.FORCE_BACK" />
    <uses-permission android:name="android.permission.INSTALL_LOCATION_PROVIDER" />
    <uses-permission android:name="android.permission.INSTALL_PACKAGES" />
    <uses-permission android:name="android.permission.INTERNAL_SYSTEM_WINDOW" />
    <uses-permission android:name="android.permission.INTERNET" />
    <uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />
    <uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS" />
    <uses-permission android:name="android.permission.NFC" />
    <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> 
    <uses-permission android:name="android.permission.READ_INTERNAL_STORAGE" /> 
    <uses-permission android:name="android.permission.READ_OWNER_DATA"/> 
    <uses-permission android:name="android.permission.READ_PHONE_STATE" />
    <uses-permission android:name="android.permission.READ_SYNC_STATS" />
    <uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED" />
    <uses-permission android:name="android.permission.RECORD_AUDIO" />
    <uses-permission android:name="android.permission.GET_ACCOUNTS" />
    <uses-permission android:name="android.permission.MANAGE_ACCOUNTS" />
        <uses-permission android:name="android.permission.PERSISTENT_ACTIVITY" />
    <uses-permission android:name="android.permission.USE_CREDENTIALS" />
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
        <uses-permission android:name="android.permission.WRITE_CONTACTS" />
    <uses-permission android:name="android.permission.WRITE_INTERNAL_STORAGE" />
    <uses-permission android:name="com.android.launcher.permission.INSTALL_SHORTCUT" />
        <uses-permission android:name="com.google.android.apps.maps.permission.PUSH_MESSAGE" />
    <uses-permission android:name="com.google.android.googleapps.permission.GOOGLE_AUTH" />
    <uses-permission android:name="com.google.android.googleapps.permission.GOOGLE_AUTH.local" />
    <uses-permission android:name="com.google.android.googleapps.permission.GOOGLE_AUTH.wise" />
    <uses-permission android:name="com.google.android.googleapps.permission.GOOGLE_AUTH.writely" />
    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES" />
    <!-- Features optional -->
    <uses-feature android:name="android.hardware.bluetooth" android:required="false" />
    <uses-feature android:name="android.hardware.camera" android:required="false" />
    <uses-feature android:name="android.hardware.camera.autofocus" android:required="false" />
    <uses-feature android:name="android.hardware.faketouch" android:required="false" />
    <uses-feature android:name="android.hardware.location" android:required="false" />
    <uses-feature android:name="android.hardware.location.gps" android:required="false" />
        <uses-feature android:name="android.hardware.location.network" android:required="false" />
    <uses-feature android:name="android.hardware.microphone" android:required="false" />
    <uses-feature android:name="android.hardware.nfc" android:required="false" />
    <uses-feature android:name="android.hardware.sensor.accelerometer" android:required="false" />
    <uses-feature android:name="android.hardware.sensor.compass" android:required="false" />
    <uses-feature android:name="android.hardware.telephony" android:required="false" />
    <uses-feature android:name="android.hardware.telephony.gsm" android:required="false" />
    <uses-feature android:name="android.hardware.touchscreen" android:required="false" />
    <uses-feature android:name="android.hardware.touchscreen.multitouch" android:required="false" />
    <uses-feature android:name="android.hardware.usb.host" android:required="false" />
    <uses-feature android:name="android.hardware.wifi" android:required="false" />
    <supports-screens
          android:anyDensity="true"
          android:largeScreens="true"
          android:normalScreens="true"
          android:resizeable="true"
          android:smallScreens="true"
          android:xlargeScreens="true" />
        <!-- END Permissions -->

    </manifest>