Third 
Hidden Battery Power
Imagine your cell battery is very low. To activate, press the keys *3370# Your 
cell will restart with this reserve and the instrument will show a 50% increase in 
battery. This reserve will get charged when you charge your cell next time.
Fourth  
How to disable a STOLEN mobile phone?
To check your Mobile phone's serial number, key in the following digits on your
 phone: * # 0 6 # A 15 digit code will appear on the screen. This number is unique 
to your handset. Write it down and keep it somewhere safe. When your phone 
get stolen, you can phone your service provider and give them this code. They 
will then be able to block your handset so even if the thief changes the SIM card, 
your phone will be totally useless. You probably won't get your phone back, but 
at least you know that whoever stole it can't use/sell it either. If everybody does
 this, there would be no point in people stealing mobile phones. 
And Finally....
Fifth  
Free Directory Service for Cells Cell phone companies are charging us $1.00 
to $1.75 or more for 411 information calls when they don't have to. Most of us 
do not carry a telephone directory in our vehicle, which makes this situation 
even more of a problem. When you need to use the 411 information option, 
simply dial: (800) FREE 411, or (800) 373-3411 without incurring any charge 
at all. Program this into your cell phone now. 
This is the kind of information people don't mind receiving, so pass it on to your 
family and friends