Nokia Code

If u have Nokia cell phone, the following will beuseful for u. Imagine ur cell battery is very low, u r expecting animportant call and u don't have a charger.
Nokia instrument comes witha reserve battery. To activate, key is " *3370# " Ur cell willr estart with this reserve and ur instrument will show a 50%incerase in battery.This reserve will get chargedwhen u charge ur cell next time.
*3370# Activate Enhanced Full Rate Codec (EFR)-Yourphone 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 alower quality sound but you should gain approx 30% more Talk Time *#4720# Deactivate HalfRate 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 NoReply" calls are diverted to
*#62# Allows you to check the number that "Divert IfUnrea chable(no service)" calls are diverted to
*#67# Allows you to check the number that "On BusyCalls" are diverted to
*#67705646# Removes operator logo on 3310 & 3330
*#73# Reset phone timers and game scores
*#746025625# Displays the SIM Clock status, if yourphone supports thispower saving feature "SIM Clock Stop Allowed", it means you willget 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 phonenumber entered
**67*number# Turn on "On Busy" diverting to the phonenumber >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 notwork *#06# For checking the International Mobile EquipmentIdentity >(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