NOKIA
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#
(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 your phones software version, 1st Line : Software Version, 2nd Line : Software Release
Date, 3rd Line : Compression Type.
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