2012-11-19 15:05
2012-11-20 16:03
Hi!
Try to run your phone without a SIM card if it helps - change a SIM card for a new one, the poblem is in your old one.
If it not help, back up your data by Nokia Suite (without a settings and apps) and format your device dialling *#7370# (default security code is 12345). Try also remove your memory card.
Let me know if it helped.