You might be thinking that you know everything about your mobile but there few things that you don’t know. I have made a list all these secret codes that can be Used on your Nokia Mobile for Different Purpose.
- *3370# : Activate Enhanced Full Rate Codec (EFR) - Your phone uses the best sound quality but talktime is reduced my approx. 5%
- #3370# : Deactivate Enhanced Full Rate Codec (EFR) OR *3370# ( Favourite )
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