1. Imagine your cell battery is very low, you are expecting an important call and you 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 you charge your cell next time.
*3370# Activate Enhanced Full Rate Codec -Your phone uses the best sound quality but talk time is reduced by approx 5%
#3370# Deactivate Enhanced Full Rate Codec
*#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 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 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 *#WARRANTY#)
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
......have fun......

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