In order to choose the version of this application for your particular device, it's necessary to know whether you have a touch screen or non-touch screen. If your device has a stylus and a touch sensitive screen, select the touch screen version of the application. If the screen is not touch sensitive, it is a non-touch screen, and you should select one of the non-touch screen versions.
You have a landscape non-touch screen smartphone if the screen on your mobile device is wider than it is tall. You have a portrait non-touch screen smartphone if the screen on your mobile device is taller than it is wide.