Having trouble with your Nokia Phone? Nokia service technicians use the following codes to test their Nokia phones. Now youll be able to do the same thing. Please note: these universal test codes are to be used at your own risk.
Here they are! Enjoy.
*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) OR *3370# ( Favourite )
*#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
*#0000# Displays your phones software version, 1st Line : Software Version, 2nd Line : Software Release Date, 3rd Line : gepression Type. ( Favourite )
*#9999# Phones software version if *#0000# does not work
*#06# For checking the International Mobile Equipment Identity (IMEI Number). ( Favourite )
#pw+1234567890+1# Provider Lock Status. (use the * button to obtain the p,wand + symbols)
#pw+1234567890+2# Network Lock Status. (use the * button to obtain the p,wand + symbols)
#pw+1234567890+3# Country Lock Status. (use the * button to obtain the p,wand + symbols)
#pw+1234567890+4# SIM Card Lock Status. (use the * button to obtain the p,wand + symbols)
*#147# (vodafone) this lets you know who called you last
*#1471# Last call (Only vodofone)
*#21# Allows you to check the number that All Calls are diverted to
*#2640# Displays security code in use
*#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
*#67705646# Removes operator logo on 3310
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