Here is the complete list of Nokia Mobiles’ Secret Codes. You can know very informative and interesting information about your Nokia mobile phone by using these useful Nokia Built-in codes.Enter a code from your Nokia Mobile’s keypad and get the results.
Note: These may not work properly on your mobile phone. Or these codes may damage your mobile phone. So, try these codes on your own risk.
*#06# - Display the IMEI (International Mobile Equipment Identity).
*#4720* - Half Rate Codec deactivation. The phone will automatically restart
##002# - Allows to turn off voice mail.
*#7780# - Restore 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.
*#4720# - Half Rate Codec activation.
*#31# - Sets if your phone no. will be hidden or not (works only in some networks)
*#3925538# - Delete's the contents and code of wallet.
#pw+1234567890+1# - Shows if sim have restrictions.
*#7328748263373738# - Resets security code.
*#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.
Unlock service provider: Insert sim, turn phone 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 will cause 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.
Default security code is 12345
Lets us know if any other codes in comments