AndroidOS4.1 operating system of smart phones, resulting in the phone does not turn on the following reasons:
1 The battery has no power, use the standard charger to charge more than half an hour, press the power button can be turned on.
2 The battery is in a dormant state, take off the battery of the phone, and charge it with the universal charge for 15 minutes to activate the battery.
3 If the software on the phone is faulty, back up data on the phone and double-clear it. (When the phone is powered off, press and hold down the volume plus button and the power Off button. When the startup screen appears, release the phone and enter Recovery. Enter Recovery> Chinese > Clear data > Clear all data).
4. It is recommended to replace the original charger and charge it for half an hour to see if it can be turned on.
5 The USB port is faulty.
6 Mainboard problems.
In the fifth and sixth cases, it is recommended to carry relevant documents and invoices to the network engineers for inspection and maintenance