I'm having the same problem with 9100 mda.

I've noticed the pouch i keep it in (meant for it) uses to strong magnets to hold it shut. Magnets and screens don't really mix>?

Anyway I've just paid £213 quid for this phone second hand and I'm dying to get it working and get my moneys worth.

I'm just sick of people who say 'oh shouldn't buy second hand then' or 'time for a new phone'.

It's not helpful when thats what forums are suppost to be for. If people on here know there stuff then please can someone help?

Also if anyone has resolved this yet please reply asap.