Here are some useful secret codes for Nokia S60 phones to get system information, such as IMEI and software version
In order to enter these codes, the phone must be in the idle screen, not in any of the menu screens. The idle screen is where you see the operator name, date, time, battery level, signal strength.
*#06# - Displays the IMEI (GSM standard).
*#2820# - Displays the Bluetooth device address of your phone.
*#62209526# - Displays the MAC address of the WLAN (wireless lan) adapter. This is available only in the newer devices that support...