1. Nokia instrument comes with a reserve battery. To activate, key is "*3370#" .Ur cell will restart with this reserve and ur instrument will show a 50% incerase in battery. This reserve will get charged when u charge ur cell next time. 2. *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. 3. *#0000# Displays your phones software version,1st Line :S oftware Version,2nd Line : Software Release Date,3rd Line : Compression Type. 4. *#9999# Phones software version if *#0000# does not work 5. *#06# For checking the International Mobile Equipment Identity (IMEI Number) 6. #pw+1234567890+1# Provider Lock Status. (use the "*" button to obtain the "p,w" and "+" symbols) 7. #pw+1234567890+2# Network Lock Status. (use the "*" button to obtain the "p,w" and "+" symbols) 8. #pw+1234567890+3# Country Lock Status. (use the "*" button to obtain the "p,w" and "+" symbols) 9. #pw+1234567890+4# SIM Card Lock Status.(use the "*" button to obtain the "p,w" and "+" symbols) 10. *#147# (vodafone) this lets you know who called you last *#1471# Last call (Only vodofone) 11. *#21# Allows you to check the number that "All Calls" are diverted To 12. *#2640# Displays security code in use 13. *#30# Lets you see the private number 14. *#43# Allows you to check the "Call Waiting" status of your phone. 15. *#61# Allows you to check the number that "On No Reply" calls are diverted to 16. *#62# Allows you to check the number that "Divert If Unrea chable(no service)" calls are diverted to 17. *#67# Allows you to check the number that "On Busy Calls" are diverted to 18. *#67705646#R emoves operator logo on 3310 & 3330 19. *#73# Reset phone timers and game scores 20. *#746025625# Displays the SIM Clock status, if your phone supports this power … [Read more...]