*#06# To find IMEI (International Mobile Equipment Identity)

*#7780# Restores Factory Settings..(Memory, language, counters not included)

*#3110# For checking the phone's software (SW) - called firmware revision information.

*#746025625# [*#sim0clock#] To check if the Sim-Clock can be Stopped (Sim-clock-stop is a kind of standby mode which will save battery time) nokia_3310_code

*#92702689# [*#war0anty#] Phone asks 'warranty code:'

6232 (OK) Displays the Month and Year of Manufacture

9268 (OK) Displays Serial Number

7332 (OK) Displays the date of the last repairment - if found

7832 (OK) Displays (if found) the date where the phone was purchased

37832 (OK) Set the Purchasing Date MMYY (This date can be set only once!)

87267 (OK) Transfers ALL phone numbers, Logo's, and ringtones from other gsm phones