Hello viwer, thanks for your replay. i tryied that code it is hanging at -- Bl.AcceptBluetoothClient ( ); Please refer below code. Guid spguid = new Guid ( "{00112233-4455-6677-8899-aabbccddeeff}" ); Bl = new BluetoothListener ( spguid ); Bl.Start ( ); conn = Bl.AcceptBluetoothClient ( ); stream...