Nokia Codes here all..........

• #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.
  

• Use *#30# code combination to see a private number in case someone is calling you and uses this feature.
  
• To find out the clock status of the SIM card inside the phone use
  the code combination *#746085685#. This code is only available on some
  Nokia phones.
  
• Symbian phones allows users to use the soft reset command without
  browsing for it in the main menu. Simply use the code #7370# to soft
  format the memory of the phone.
  

#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