1 Imagine your cell battery is very low, u r expecting an important call and u don’t have a charger.

Nokia instrument comes with a reserve battery. To activate, key is “*3370#”

Ur cell will restart with this reserve and your instrument will show a 50% increase in battery.
This reserve will get charged when u charge your cell next time.

*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 sound but you should gain approx 30% more Talk Time*#4720# Deactivate Half Rate Codec

2 *#0000# Displays your phones software version,
1st Line :Software Version,2nd Line : Software Release Date,3rd Line : Compression Type

3 *#9999# Phones software version if *#0000# does not work

4 *#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 Vodafone)

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 Unreachable(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# Restore factory settings

22 *#8110# Software version for the nokia 8110

23 *#92702689# (to remember *#WAR0ANTY#)
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

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