Having trouble with your Nokia Phone? Nokia service technicians use the following codes to test their Nokia phones. Now you’ll 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.

1. *3370# Activate Enhanced Full Rate Codec (EFR) - Your phone uses the best sound quality but talk time is reduced my 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, 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. ( Favourite )
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
33. press and hold # Lets you switch between lines
34. *#92702689#*3370# Warranty details
35. #3370# Basically increases the quality of calling sound, but decreases battery length
36. *#0000# Deactivates the above

Shows your software version

1. *#746025625#This shows if your phone will allow sim clock stoppage
2. *4370#

Half Rate Codec activation (It will automatically restart)

1. #4370# Half Rate Codec deactivation. It will automatically restart

Restore Factory Settings

1. *#7780#

Manufacturer Info

1. *#3283# Date of Manufacturing

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