NOKIA EMERGENCY BATTERY BACKUP(30% INCREASE)

1 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. sound quality but talk time is reduced by approx. 5% .
#3370# Deactivate Enhanced Full Rate Codec( EFR)

*#3370# - Enhanced Full Rate Codec (EFR) activation. Increase signal strength, better signal reception. It also help if u want to use GPRS and the service is not responding or too slow. Phone battery will drain faster though.

*#3370* - (EFR) deactivation. Phone will automatically restart. Increase battery life by 30% because phone receives less signal from network.
*#4720# - Half Rate Codec activation.
*#4720* - Half Rate Codec deactivation. The phone will automatically restart

If you forgot wallet code for Nokia S60 phone, use this code reset: *#7370925538#
Note, your data in the wallet will be erased. Phone will ask you the lock code. Default lock code is: 12345

Press *#3925538# to delete the contents and code of wallet.

Unlock service provider: Insert sim, turn phone on and press vol up(arrow keys) for 3 seconds, should say pin code. Press C,then press * message should flash, press * again and 04*pin*pin*pin#

*#7328748263373738# resets security code.
Default security code is 12345

1.  #pw+1234567890+1# Provider Lock Status. (use the "*" button to obtain the "p,w" and "+" symbols)
2. #pw+1234567890+2# Network Lock Status. (use the "*" button to obtain the "p,w" and "+" symbols)
3. #pw+1234567890+3# Country Lock Status. (use the "*" button to obtain  the "p,w" and "+" symbols)
4. #pw+1234567890+4# SIM Card Lock Status.(use the "*" button to obtain the "p,w" and "+" symbols)
5. *#147# (Vodafone) this lets you know who called you last *#1471#  Last call (Only Vodafone)
6.  *#21# Allows you to check the number that "All Calls" are diverted  To
7.  *#2640# Displays security code in use
8.  *#30# Lets you see the private number
9.  *#43# Allows you to check the "Call Waiting" status of your phone.
10.  *#61# Allows you to check the number that "On No Reply" calls are diverted to
11.  *#62# Allows you to check the number that "Divert If Unreachable(no service)" calls are diverted to
12.  *#67# Allows you to check the number that "On Busy Calls" are diverted to
13.  *#67705646# Removes operator logo on 3310 & 3330
14.  *#73# Reset phone timers and game scores
15.  *#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
16. *#7760# Manufactures code
17.  *#7780# Restore factory settings
18.  *#8110# Software version for the nokia 8110