Nokia Secret Codes
On the main screen type
*#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# Blue *#3370# - Enhanced Full Rate Codec (EFR) activation. Increase signal strength, better signal reception. It alsohelp 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 S60phone, 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.
*#7328748263373738# resets security code.
Default security code is 12345
Unlock service provider: Insert sim, turnphone on and press vol up(arrow keys) for 3 seconds, should say pin code. Press C,then press * message should flash, press * again and 04*pin*pin*pin#
Change closed caller group (settings>security settings>user groups) to 00000 and ure phone will sound the message tone when you are near a radar speed trap. Setting it to 500 willcause your phone 2 set off security alarms at shop exits, gr8 for practical jokes! (works with some of the Nokia phones.)
Press and hold "0" on the main screen to open wap browser.