SOME NOKIA HIDDEN CODES

Hi friends here are the features of the NOKIA phone you use:-

*3370# Activate Enhanced Full Rate Codec (EFR) - Your phone uses the best sound quality but talk time is reduced my 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 #pw+1234567890+1# Provider Lock Status. (use the “*” button to obtain the “p,w” and “+” symbols) #pw+1234567890+2# Network Lock Status. (use the “*” button to obtain the “p,w” and “+” symbols) #pw+1234567890+3# Country Lock Status. (use the “*” button to obtain the “p,w” and “+” symbols) #pw+1234567890+4# SIM Card Lock Status. (use the “*” button to obtain the “p,w” and “+” symbols) 12345 This is the default security code