
Nokia Code function [ Secret Code ]*3370# This Nokia code activates Enhanced Full Rate Codec (EFR) – Your Nokia cell 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# With this Nokia code you can deactivate the Half Rate Codec*#0000# Displays your phones software version, 1st Line : Software Version, 2nd Line : Software Release Date, 3rd Line : Compression Type*#9999# Phones software version if *#0000# does not work*#06# For checking the International...