*Nokia Mobile hidden Codes list to do all the secret things *#06#for checking the IMEI
*#7780# reset to factory settings.
*#67705646# This will clear the LCD display(operator logo).
*#0000# To view software version.
*#2820# To show Bluetooth device address.
*#92702689# secret menu
information below: 1. Displays Serial Number. 2. Displays the Month and Year of Manufacture 3. Displays (if there) the date where the phone was purchased (MMYY) 4. Displays the date of the last repair – if found (0000) 5. Shows life timer of phone (time passes since last start)