It can be solved in the following ways:
1, Enter the Settings - battery\/more Settings to confirm whether the dual engine flash charge is turned on (if no switch, flash charge is turned on by default);
2. Replace the lock screen style of the phone (if other lock screen styles are used, the screen will not display dual engine flash charge when charging);
3, confirm whether to use the original charger, data cable;
4, the connectivity of the socket will also affect charging, you can replace other sockets to try charging;
5, disconnect the power, restart the phone and put it for a while, and then try to charge it;
6, mobile phone Settings -- more Settings -- backup and reset\/restore factory Settings -- restore all Settings; (This operation will not delete the data in the phone, will restore all the Settings in the phone, including: set wallpaper, unlock style, WiFi, default opening program, etc.)
7, if the above method still can not solve the problem of the mobile phone can not flash charge, please bring the purchase invoice, warranty card, mobile phone and charger to the customer service center for processing.