Hi Is someone able to help me with this problem. I've been advised it is not a network locking problem. How the problem occurred: I was deleting photos. The battery ran out. I plugged my computer serial cable charger into the phone and charged it for 2 minutes. I turned it on while charging, entered the pin code, it said "Enter Restriction Code". I've tried multiple times but no code works. I've called AAPT, Telstra, Nokia, a service centre and they keep sending me to each other in a never ending circle. Please help if you can. Thanks kindly. Mark.