public static bool isMobilePlatform { get; }

Currently this returns true if the application is running on Android, iOS, or WSA. When targeting WebAssembly and running in a web browser, this property might return "true" or "false", depending on whether the current browser is running on a mobile device. Due to privacy and anonymization reasons, this property might not always report accurate information on all web browsers.

Note: On Universal Windows Platform, tablets are treated as desktop machines, therefore, this property returns true only when running on phones and IoT device family devices.