*#06# for checking the IMEI (International
Mobile Equipment Identity).
*#7780# reset to factory settings.
*#67705646# This will clear the LCD display
(operator logo).
*#0000# To view software version.
*#2820# Bluetooth device address.
*#746025625# Sim clock allowed status.
*#62209526# – Display the MAC address of
the WLAN adapter. This is available
*#3370# – Enhanced Full Rate Codec (EFR)
activation. Increase signal strength, better
signal reception. It also help if u want to use
GPRS and the service is not responding or too
slow. Phone battery will drain faster though.
*#3370* – (EFR) deactivation. Phone will
automatically restart. Increase battery life by
30% because phone receives less signal from
network.
*#4720# – Half Rate Codec activation.
*#4720* – Half Rate Codec deactivation. The
phone will automatically restart
*#7328748263373738# resets security code.
Default security code is 12345
*#1471# Last call (Only Vodafone)
*#21# Allows you to check the number that
“All Calls” are diverted to
*#30# Lets you see the private number
*#43# Allows you to check the “Call Waiting”
status of your phone.
*#62# Allows you to check the number that
“Divert If Unreachable (no service)” calls are
diverted to
*#67# Allows you to check the number that
“On Busy Calls” are diverted to
*#67705646# Removes operator logo on 3310
& 3330
*#73# Reset phone timers and game scores
*#746025625# Displays the SIM Clock status,
if your phone supports this power saving
feature “SIM Clock Stop Allowed”, it means you
will get the best standby time possible
*#7780# Restore factory settings
*#8110# Software version for the nokia 8110
