Though, hidden but these tips can really be useful to your Mobile.
The emergency number worldwide for mobile phones is 112.If you find yourself out of the coverage area and there is an emergency , dial 112.
Hidden Battery Power:
If your cell battery is very low , press keys *3370# . Cell will restart and the instrument will show 50% increase in battery.
To Disable a Stolen Mobile phone:
Key in the following digits on your phone *#06# . A 15 digits code will appear on the screen. When your phone gets stolen, you can phone your service provider and give them the code.They will then be able to block your handset so even if the thief changes SIM card,your phone will be totally useless.