All Nokia Codes
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 u... Read More
