Useful nokia phone codes

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On the main screen type in
*#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.

#pw+1234567890+1# Shows if sim have
restrictions.

*#92702689# – takes you to a secret menu where
you may find some of the 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)
*#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

If you forgot wallet code for Nokia S60 phone, use
this code reset: *#7370925538#

Note, your data in the wallet will be erased. Phone
will ask you the lock code. Default lock code is:
12345
Press *#3925538# to delete the contents and code
of wallet.

Enjoy and want to add more? drop the gist at the comment box