Do a hard reset :
CAUTION: A "master reset" changes the phone settings back to default. This process will erase all contacts, downloaded settings, and downloaded applications (ringtones, wallpapers, graphics, etc). This process cannot be undone. So, backup all of your data in phone memory. Enter *#7370# from standby screen and the standard code for nokia phone is 12345. After that, backup all data in memory card and mass memory to PC. And then format your mass memory and memory card. Good luck.....
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