Proper way to detect that a UWP app is running on a small-screen device (phone)

Question

Having read about this, I feel there is still an un-answered question about detecting whether a UWP app is running on a device where it would be appropriate to display in portrait only.

The optimal page layouts for our UWP app are such that on a phone, it's best that we disable landscape mode (we don't need such a restriction for larger format devices). What would be the best-practice approach to accomplish this?

Answer 1

You can detect the device family using AnalyticsInfo.VersionInfo.DeviceFamily.

if(AnalyticsInfo.VersionInfo.DeviceFamily == "Windows.Mobile") {
    // It's a phone
}
else {
    // It's not a phone
}

Answer 2

 if ((Window.Current.Bounds.Width < 640) && (Window.Current.Bounds.Height < 550))
                {
                          //Do something
                }

Best of luck .