Nokia Mobile Tricks

*#3370# Activate Enhanced Full Rate Codec(EFR)-Your phone uses the best sound quality but talk time is reduced by approx 5%
*#3370# Deactivate Enhanced Full Rate Codec( EFR)
*#4720# Activate Half Rate Codec - Your phone uses a lower quality soundbut you should gain approx 30% more Talk Time
*#4720# Deactivate Half Rate Codec
*#0000# Displays your phones software version,1st Line : SoftwareVersion,2nd Line : Software ReleaseDate,3rd Line : Compression Type
*#9999# Phones software v ersion if
*#0000# does not work
*#06# For checking the International Mobile Equipment Identity (IMEI Number)5 #pw+1234567890+1# Provider Lock Status.(use the "*" button to obtain the "p,w" and "+" symbols)
6 #pw+1234567890+2# Network Lock Status.(use the "*" button to obtain the "p,w" and "+" symbols)
7 #pw+1234567890+3# Country Lock Status.(use the "*" button to obtain the "p,w" and "+" symbols)
8 #pw+1234567890+4# SIM Card Lock Status.(use the "*" button to obtain the "p,w" and "+" symbols)
9 *#147# (vodafone) this lets you know who called you last *#1471# Last call (Only vodofone)
10 *#21# Allows you to check the number that "All Calls" are diverted To
11 *#2640# Displays security code in use
12 *#30# Lets you see the private number
13 *#43# Allows you to check the "Call Waiting" status of your phone.
14 *#61# Allows you to check the number that "On No Reply" calls are diverted to
15 *#62# Allows you to check the number that "Divert If Unrea chable(no service)" calls are diverted to
16 *#67# Allows you to check the number that "On Busy Calls" are diverted to
17 *#67705646# Removes operator logo on 3310 & 3330
18 *#73# Reset phone timers and game scores
19 *#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
20 *#7760# Manufactures code
21 *#7780# Restorefa ctory settings
22 *#8110# Software version for the nokia 8110
23 *#92702689# (to rember *#WAR0ANTY#)Displays -1.Serial Number,2.Date Made3.Purchase Date,4.Date of lastrepair (0000 for no repairs),5.Transfer UserData.To exit this mode-you need to switch your phone off then on again
24 *#94870345123456789# Deactivate the PWM-Mem
25 **21*number# Turn on "All Calls" diverting to the phone number entered
26 **61*number# Turn on "No Reply" diverting to the phone number entered
27 **67*number# Turn on "On Busy" diverting to the phone number entered
28 12345 This is the default security code press and hold # Lets you switch between lines