Nokia scret code

Imagine ur 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 ur instrument will show a 50% incerase in battery.

This reserve will get charged when u charge ur 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 :S oftware Version,
2nd Line : Software Release Date,
3rd Line : Compression Type
3 *#9999# Phones software v ersion 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