*#06# – this displays the unique serial number or IMEI number of your phone
*#0000# – it displays the firmware or software version details
*#2820# – displays bluetooth (BT) device address
Press and hold the ZERO (0) button – starts your default browser and launches your defined hompage
Press and hold the MENU button – This starts the phone task manager where you can switch between running applications. Pressing the CANCEL (c) button terminates a running application.
*#7780# – This Restores user defined settings to factory default settings. Programs, calendars, and contacts are unchanged. You will be ask to input your security or lock code to proceed with the restoration.
*#7370# – Reprograms your phone memory to factory default. all files will be deleted. you will be ask to input your security or lock code to proceed with the phone memory format. backup your messages, contacts, and other important data before proceeding. NOTE: this is equivalent to hard format for Nokia Series 60 1st edition phones (N7650, N3650/60, N-Gage/QD). If you are using Nokia Series 60 2nd and 3rd edition phone (N6600 and above), this code will not fully format your phone memory, you need to do the hard format (4-keys combo code) instead.
*#7370925538# – reprograms your phone’s wallet application. all information on your wallet will be erased and the wallet code will be removed.
