Just for information, on Fujitsu Siemens PocketLoox 720 the Button Test demo works right for stylus, but does not work right for buttons. Or may be I do not understand how it should work.
In landscape, when the "up" button is pressed (which points to the screen), the Button Demo reports "right".
On the other way, It seems logical, because when I hold device in landscape mode, this button points to the right...
So, what the demo should tell us in landscape mode, when the "up" button is pressed? (which points to screen)