Error connection with android app

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http://stackoverflow.com – My application work fine on my emulator but when i installed it in the android device its not appear on the application list and i get the error message is "error connection" this is the manifest.xml to my app is there any error!!!! <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.starting" android:versionCode="1" android:versionName="1.0" > <uses-sdk android:minSdkVersion="8" android:targetSdkVersion="15" /> <permission android:name="android.permission.INTERNET" /> <permission android:name="android.permission.ACCESS_COARS (HowTos)