Originally Posted by arjunrekhi
hi i have a bb 8900
ok the problem is that i cant unlock and lock my phone using the top left button (on top of the phone) like it will start wouking randomly and stop working randomly...can someone please help
Sounds like a contact problem.
You could take it to your nearest carrier store and see if they can do anything about. If you don't want to do that and want to fix it yourself, I have a post for that. Disassembly: Blackberry Javelin 8900; Pictures.