My C902 navigation key is stuck. Left, right and down work but Up won't! I can work around the phone without it but it's getting a bit tiresome. Trouble is if I get it fixed by Orange or Sony, they wipe all my applications, games etc and won't refund me for them being lost! And it happens even if you ask them not to wipe stuff. Anyone got any knowhow on how to fix it for me - please?!!!