I just bump into two interesting cellphone tips and I hope these tips useful for you guys.
1) Hidden Battery power
Imagine your cell battery is very low, and your expecting an important call and you don’t have a charger. Nokia phones come with a reserve battery. To activate, press the keys *3370#. Your phone will restart with this reserve and the instrument will show a 50% increase in battery. This reserve will get charged again when you charge your phone next.
2) Use your phone to open your car
This may come in handy someday. Good reason to own a cell phone: If you lock your keys in the car and the spare keys are home, call someone at home on your cell phone. Hold your cell phone about a foot from your car door and have the other person at your home press the unlock button on your spare keys, holding it near the phone on their end. Your car will unlock. Saves someone from having to drive your keys to you. Distance is no object. You could be hundreds of miles away, and if you can reach someone who has the other “remote” for your car, you can unlock the doors (or the boot).
