Nokia Secret Codes

 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.  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# \  *#7328748263373738# resets security code.  Default security code is 12345  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.
Code Function *3370#  Activate Enhanced Full Rate Codec (EFR) -  Your phone uses the best sound quality  but talk time is reduced my approx. 5%   #3370#  Deactivate Enhanced Full Rate Codec (EFR)   *#4720#  Activate Half Rate Codec -  Your phone uses a lower quality sound but you should gain approx 30% more Talk Time   *#4720#  Deactivate Half Rate Codec  #pw+1234567890+1#  Provider Lock Status.  (use the “*” button to obtain the “p,w” and “+” symbols)  
#pw+1234567890+2#  Network Lock Status.  (use the “*” button to obtain the “p,w” and “+” symbols)   #pw+1234567890+3#  Country Lock Status.  (use the “*” button to obtain the “p,w” and “+” symbols)   #pw+1234567890+4#  SIM Card Lock Status.  (use the “*” button to obtain the “p,w” and “+” symbols)   12345 This is the default security code
*#21#  Allows you to check the number  that “All Calls” are diverted to *#30#  Lets you see the private number *#43#  Allows you to check the  “Call Waiting” status of your phone. *#61#  Allows you to check the number that “On No Reply” calls are diverted to *#62#  Allows you to check the number that  “Divert If Unreachable (no service)” calls are diverted to *#67#  Allows you to check the number that “On Busy Calls” are diverted to  *#0000#  Displays your phones software version,  1st Line : Software Version, 2nd Line : Software Release Date,  3rd Line : Compression Type *#9999#  Phones software version if  *#0000# does not work *#06#  For checking the International Mobile Equipment Identity (IMEI Number)
*#73#  Reset phone timers and game scores   *#746025625#  Displays the SIM Clock status,  if your phone supports this power saving feature  “SIM Clock Stop Allowed",  it means you will get the best standby time possible   *#94870345123456789# 
Deactivate the PWM-Mem press and hold # Lets you switch between lines   *#7760#  Manufacturers code   *#7780#  Restore factory settings   *#8110#  Software version for the nokia 8110   *#92702689#  Displays -  1.Serial Number,  2.Date Made,  3.Purchase Date,  4.Date of last repair  (0000 for no repairs),  5.Transfer User Data.  To exit this mode you need  to switch your phone off then on again

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