Nokia mobile tricks....
Nokia Universal Codes Code Description These Nokia codes will work on most Nokia Mobile Phones 1 3370 Activate Enhanced Full Rate Codec EFR - Your phone uses the best sound quality but talk time is reduced my approx. 5 2 3370 Deactivate Enhanced Full Rate Codec EFR OR 3370 F avourite 3 4720 Activate Half Rate Codec - Your phone uses a lower quality sound but you should gain approx 30 more Talk Time. 4 4720 Deactivate Half Rate Codec. 5 0000 Displays ... read more>>