Access hidden menus and information in your Nokia Phone. Take a look and find out what's in with your mobile phone. The following are the Nokia's unrevealed secret codes.
#06# - for checking the IMEI (International Mobile Equipment Identity).
#7780# - resets phone to factory settings.
#67705646# - clears the LCD display(operator logo).
#0000# - views software/firmware version.
#2820# - shows Bluetooth device address.
#746025625# - Sim clock allowed status.
#pw+1234567890+1# - Shows if sim have restrictions.
#92702689# - secret menu for the informations 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* or *3370# - (EFR) deactivation. Phone will automatically restart. Increase battery life by 30% because phone receives less signal from network.
#4720# - Half Rate Code activation.
#4720* or *4720# - Half Rate Code deactivation. The phone will automatically restart. Network operators often activate half rate on overloaded towers during peak times to save costs.
*#7370# - Soft format of memory (Symbian).
*#7370925538# - Resets the mobile wallet.
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