When developing a multiscreen game or app, developers need to read device's screen size to correctly rescale and reorganise screen elements.
I have been always using stage.fullScreenWidth and stage.fullScreenHeight instead of stage.stageWidth and stageHeight as I heard from other developers that the returned values may be incorrect on some devices. But when I tested my app on Motorola Xoom which has Android 3.0 I noticed that a bottom bar that comes from operating system with Home / Back buttons covers my app (Motorola Xoom doesn't have hardware buttons so they are available on the screen). So AIR returns the full height value, including that bottom bar, what causes my app to be behind it. There are some buttons in the app that could not be reached because of that.
I have tested my app on few Android devices available to me against stage.stageWidth and stageHeight and I got correct values. Can anybody confirm if there are still issues on any devices including iOS? Maybe that was only a problem with AIR 2.0 and 2.5?