nokia s mobile code

(1) *3370# Activate Enhanced Full
Rate Codec (EFR) - Your phone uses
the best sound quality but talktime 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.

(6)*#9999# Phones software version
if *#0000# does not work.

(7)*#06# For checking the
International Mobile Equipment
Identity (IMEI Number).