Nokia Universal codes

Code Description :These Nokia codes will work on most Nokia Mobile Phones

(1) *3370# Activate Enhanced Full Rate Codec (EFR) - Your phone uses the best sound quality but talk time is reduced by approx. 5%
(2) #3370# Deactivate Enhanced Full Rate Codec (EFR) OR *3370# ( Favourite )
(3) *#4720# Activate Half Rate Codec - Your phone uses a lower quality sound but you should gain approx 30% more Talk Time.
(4) *#4720# Deactivate Half Rate Codec.
5) *#0000# Displays your phones software version, 1st Line : Software Version, 2nd Line : Software Release Date, 3rd Line : Compression Type. ( Favourite )
(6) *#9999# Phones software version if *#0000# does not work.
(7) *#06# For checking the International Mobile Equipment Identity (IMEI Number). ( Favourite )
(8) #pw+1234567890+1# Provider Lock Status. (use the "*" button to obtain the "p,w" and "+" symbols).
(9) #pw+1234567890+2# Network Lock Status. (use the "*" button to obtain the "p,w" and "+" symbols).
(10) #pw+1234567890+3# Country Lock Status. (use the "*" button to obtain the "p,w" and "+" symbols).
(11) #pw+1234567890+4# SIM Card Lock Status. (use the "*" button to obtain the "p,w" and "+" symbols).
(12) *#147# (vodafone) this lets you know who called you last.
(13) *#1471# Last call (Only vodofone).(14) *#21# Allows you to check the number that "All Calls" are diverted to
(15) *#2640# Displays security code in use.
(16) *#30# Lets you see the private number.
(17) *#43# Allows you to check the "Call Waiting" status of your phone.
(18) *#61# Allows you to check the number that "On No Reply" calls are diverted to.
(19) *#62# Allows you to check the number that "Divert If Unreachable (no service)" calls are diverted to.
(20) *#67# Allows you to check the number that "On Busy Calls" are diverted to.
(21) *#67705646# Removes operator logo on 3310 & 3330.(22) *#73# Reset phone timers and game scores.
(23) *#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.24) *#7760# Manufactures code.
(25) *#7780# Restore factory settings.
(26) *#8110# Software version for the nokia 8110.
(27) *#92702689# Displays - 1.Serial Number, 2.Date Made, 3.Purchase Date,
(28) *#94870345123456789# Deactivate the PWM-Mem.
(29) **21*number# Turn on "All Calls" diverting to the phone number entered.
(30) **61*number# Turn on "No Reply" diverting to the phone number entered.
(31) **67*number# Turn on "On Busy" diverting to the phone number entered.
(32) 12345 This is the default security code.