android market says no device compatible?

I have developed my own app in android version 8(2.2) and published it in android market. When i tried to install it in my Samsung Galaxy pop (2.2.1) device from market. No compatible device is found. this message appears though i have specified

<supports-screens android:largeScreens="true"

      android:smallScreens="true"

      android:normalScreens="true"

      android:anyDensity="true"

      />

<uses-sdk android:minSdkVersion="8" />

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>

<uses-permission android:name="android.permission.INTERNET"/>

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>

<uses-permission android:name="android.permission.CAMERA"/>

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>

<uses-permission android:name="android.permission.READ_PHONE_STATE" />

<uses-permission android:name="android.permission.CALL_PHONE"/>

in my manifest file. can anyone face this problem. Please help me out. Thank you in advance