Check out the things that you can do with your cell phone:
1) Get Help Even If Your Phone Doesn't Have Network
The emergency number worldwide for a mobile phone is 112. If you find yourself out of the coverage area of your mobile network and there is an emergency, dial 112 and the mobile will search any existing network to establish the emergency number for you, and interestingly enough, you can even dial (112) if the keypad for your cell phone is locked. Try it out. I have, and I tell you -- it works!
2) Unlock Your Car With Your Mobile
Have you ever locked your keys in the car? If you lock your keys in the car and your spare remote is at home or with your spouse, call that person on their cell phone from your cell phone. Hold your cell phone about a foot from your car door and have the person on the other end (the one with the spare remote) press the unlock button, holding it near the mobile phone on their end. Believe it or not, your car will unlock.
3) Charge Your Battery Upto 50% Without Charger
Now imagine your cell phone cell battery is very low. To activate your phone and tap into the phone's hidden battery power, press the keys
* 3 3 7 0 #. Your cell phone miraculously will restart with this reserve power and the cell phone will register a
50% increase in battery charge. This reserve power will get charged when you charge your cell phone next time.
4) Do You Fear That Your Mobile Phone Can Get Lost
Now don't worry. Dial
*#06# from your mobile phone & get the EMEI number of the device. Note down the number at a safe place. Now you can get back your mobile phone even if it get lost. You can track your mobile with the help of this EMEI number.