How to disable Frame Rate Counter in Windows 8 Applications

To disable Frame Rate Counter in Windows 8 Applications there should enter next line in MainPage.xaml.cs on public MainPage() method :

public MainPage()
        {
            this.InitializeComponent();
            Application.Current.DebugSettings.EnableFrameRateCounter = false;
         }

Windows Phone 8 and SQLite deploy to device error

On the Build tab, you’ll see Conditional compilation symbols under the General header, containing a default value of SILVERLIGHT;WINDOWS_PHONE on a Windows Phone app project. Change the value to SILVERLIGHT;WINDOWS_PHONE;USE_WP8_NATIVE_SQLITE and save the project file.