To format a Symbian phone

- Recharge the phone to full
- Switch off
- Switch on and press *key+ GreenKey(dial)+ 3key(def3)
- Phone will show a Formatting screen

Hi...

On a Series 60 v1 based phone (N-Gage, 3650, 7650), two key sequences will allow to restore your phone to a cleaner state:

- Normal Reset (*#7780#) : Restores ini files from rom but preserves user data (photos, 3rd party apps etc)

- Deep Reset (*#7370#) : This reformats completely the C: drive. All applications and files stored on this drive will be lost and clean default files will be rewritten.

In both case, the phone will ask you a confirmation and you will have to enter a security code (12345 by default).

The *#7370# key sequence does not format the c drive. It just soft formats the phone and all the user data will be erased.