Nokia Codes.. Some Codes here... May work... May not wok... Nokia Code function *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 Mobile Equipment Identity (IMEI Number) . #pw+1234567890+1# Provider Lock Status. (use the "*" button to obtain the "p,w" and "+" symbols). source:http://nokiacall.blogspot.de/
