I have a problem with a Nokia 6600.
There's a known bug for adding Commands to a fullscreen canvas. Adding a command works, but the Commands do not react on selection.
See also: section 2.11 in Known_Issues_In_The_Nokia_6600_v1_5_en.
This issue exists for firmware version 3.42.1, but should have been corrected in firmware 4.09.1. (though section 2.10 says no solution exists for 3.42.1 or 4.09.1, confusing).
I wrote a test program for testing on this bug. I tested it on a 6600 with firmware 5.27.0 and it failed.
Can anyone confirm this?