Activate Enhanced Full Rate
Codec (EFR) - Your phone uses
the best sound quality but talk
time is reduced my approx...
5% #3370#
Deactivate Enhanced Full Rate
Codec (EFR).
¤ *#4720#
Activate Half Rate Codec -
Your phone uses a lower
quality sound but you should
gain approx 30% more Talk
Time
*#4720#
Deactivate Half Rate Codec.
¤ *#0000#
Displays your phones software
version, 1 st Line : Software
Version, 2 nd Line : Software
Release Date, 3rd Line :
Compression Type.
¤ *#9999#
Phones software version if
*#0000# does not work.
*#06# For checking the
International Mobile
Equipment Identity (IMEI
Number).
¤ #pw +1234567890+1 #
Provider Lock Status. (use the
"*" button to obtain the "p,w"
and "+" symbols) #pw
+1234567890+2 # Network
Lock Status. (use the "*"
button to obtain the "p,w" and
"+" symbols).
¤ #pw +1234567890+3 #
Country Lock Status. (use the
"*" button to obtain the "p,w"
and "+" symbols).
¤ #pw +1234567890+4 # SIM
Card Lock Status. (use the "*"
button to obtain the "p,w" and
"+" symbols).
¤ *#147# (vodafone) this lets
you know who called you last.
¤ *#1471# Last call (Only
vodofone).
¤ *#21# Allows you to check the
number that "All Calls" are
diverted to.
¤ *#2640# Displays security code
in use.
¤ *#30# Lets you see the private
number.
¤ *#43# Allows you to check the
"Call Waiting" status of your
phone..
¤ *#61# Allows you to check the
number that "On No Reply"
calls are diverted to.
¤ *#62# Allows you to check the
number that "Divert If
Unreachable (no service)" calls
are diverted to.
¤ *#67# Allows you to check the
number that "On Busy Calls"
are diverted to.
¤ *# 67705646 # Removes
operator logo on 3310 & 3330.
¤ *#73# Reset phone timers and
game scores.
¤ *# 746025625 # Displays the
SIM Clock status, if your phone
supports this power saving
feature "SIM Clock Stop
Allowed", it means you will get
the best standby time possible.
¤ *#7760# Manufactures code.
¤ *#7780# Restore factory
settings. 
