Instruction
1
If you need to delete from your phone pictures, videos and other data stored on the memory card, you need to format only the memory card. For this, go to menu – applications – file Manager – memory card functions function the memory card is to format. You can also format the memory card by connecting the phone to PC as a USB drive by right-clicking the mouse on the icon of the memory card in Windows Explorer, choose the menu item "Format".
2
If you need to reset your phone to the settings made at the factory, you should do a Soft reset. To do this, enter on the telephone keypad service command *#7780# or go to menu – settings – phone management – factory settings. After you request a code, enter 12345 and settings will be reset. In some Nokia models the possible partial loss of your personal data so save your contacts and other information.
3
In the case when you need to completely format the phone, including all personal data and settings, you can do a Hard reset. On the phone keypad, dial the service command *#7370#. After you request a code, enter 12345. All data and settings will be deleted and restore them would be impossible, so be careful backing up.