How to get Screen size of a windows phone 8 device

Question

I was searching for how can i get the Actual screen size of a windows phone 8 device , i've found this method but it work only with Devices With GDR3 update

Answer 1

You can find the screen size by using

Application.Current.Host.Content.ActualWidth;

and

Application.Current.Host.Content.ActualHeight;

On my Windows phone 8s they return 480x800 which is the correct screen size.

Note that the values returned are relative to portrait mode, if you're using landscape you'll have to invert them.

Answer 2

UPDATED : i've found this method

private void getScreenInfo() 
{
    double dpix = -1.01;
    double screensize = -1.01;
    double dpiy = -1.01;
    Size res;
    try {
        dpix = (double)DeviceExtendedProperties.GetValue("RawDpiX");
        dpiy = (double)DeviceExtendedProperties.GetValue("RawDpiY");
        res = (Size)DeviceExtendedProperties.GetValue("PhysicalScreenResolution");
        screensize = Math.Sqrt(Math.Pow(res.Width / dpix, 2) + Math.Pow(res.Height / dpiy, 2));
    }
    catch (Exception e) {
    }
}