А дали е така... или тъпи журналя:

Nokia Code Function
*3370# / #3370# Activate / Deactivate Enhanced Full Rate Codec (EFR) - Your phone uses the best sound quality but talk time is reduced my approx. 5%
*#4720# / *#4720# Activate / Deactivate Half Rate Codec - Your phone uses a lower quality sound but you should gain approx 30% more Talk Time

Welcome to the real world!

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