First, you can try to connect the computer with a data cable and charge it for 30 minutes to see if you can turn it on.
1. In the off state, press and hold down the volume plus button and the Off button. When the startup screen appears, let go and enter the Recovery. Enter Recovery> Chinese > Clear data > Clear all data.
2. Whether it can enter Recovery. Method of entering Recovery: In the shutdown state, press and hold down the Volume Increase button and then the Shutdown button. When the startup screen appears, release the hand and enter Recovery. If you can access Recovery, please switch the system under Recovery and back up your data. If it fails, you need to delete all data (your contacts, SMS messages, mobile applications, etc., disappear).
3, mostly because too much electricity makes the battery into a dormant state. It is recommended to try the following:
(1) Change the charging method, such as charging from the charger to the computer usb charging, to see whether it can be turned on normally. (This is to rule out the cause of battery sleep) or unplug the battery, and then reinstall it to see if it can be turned on normally.
(2) It may be the system card. Rebooting the phone will fix it.
4, mobile phone system problems can not be identified. Whether to enter Fastboot. The method of entering Fastboot: In the shutdown state, press and hold down the \"volume reduction key\" and then press and hold down the \"Shutdown key\