Nokia codes - Userfull hints for mobile users

Hi frends,
If u have Nokia cell phone, the following will be
useful for u.
Imagine ur cell battery is very low, u r expecting an
important call
and u don't have a charger.Nokia instrument comes with
a reserve
battery. To activate, key is " *3370# " Ur cell will
restart with this
reserve and ur instrument will show a
50%incerase in battery.This reserve will get charged
when u charge ur
cell next time.
*3370# Activate Enhanced Full Rate Codec (EFR)-Your
phone uses the
best sound quality
but talk time is reduced by 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
*#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
*#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
Unrea chable(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
thispower saving
feature "SIM Clock Stop Allowed", it means you will
get the best
standby time possible
*#7760# Manufactures code
*#7780# Restore factory settings
DIVERTING>>>
**21*number# Turn on "All Calls"
diverting to the phone number entered
**61*number# Turn on "No Reply" diverting to the phone
number entered
**67*number# Turn on "On Busy" diverting to the phone
number >entered
12345 This is the default security code press and hold
# Lets you
switch between lines
*#0000# Displays your phones software version,
1st Line: Software Version,
2nd 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)

Happy Talking.... & Happy Billing....
~Rahul Vaja