You don't know about smartphone
1.The standby battery contact your mobile phone battery, in order to allow it to continue to use, press the *3370# key, the mobile phone will restart, after the start, you will find the power increased 50%. This part of the hidden spare power run out you have to charge, and again when charging, invisible backup battery and charging, the next time the power is low and can use this method. Know that in case of emergency, if the mobile phone battery works very well.
2.Vehicle remote control on the car?Car remote control can you open it?If you can, in your car for the remote control will one day fall in the car and spare remote control at home again, you will find a mobile phone is convenient, use mobile phones make a family, take a foot from the door in your mobile phone, at the same time the family with the remote control in his cell phone rang beside the unlock button on the remote control, this way you can open the door.This method no matter how far you have to drive home work.
3.Emergency phone all over the world can call common emergency number is 112, if you find yourself no mobile phone signal coverage area, at the same time you again meet the emergency, use your cell phone dial 112 for it, because this time your phone will automatically search all available networks and to establish an emergency call.Particularly interesting is that even if your phone is in the state of the keyboard lock, you can also call 112.Try it!