1, the voltage is not enough, it is recommended to change the jack, such as originally plugged in the computer charging to the socket.
2, the charger or data cable is not the original replacement use the original mobile phone data cable and the original charger to charge.
3, check the room temperature is not too low! Some batteries are set to a low temperature protection temperature is too low sometimes the phone will not be able to charge, to prevent the formation of deposits in the battery, resulting in an internal short circuit of the battery.
4. The charging head has been aging for a long time or the interface is dirty. Take a fine piece of metallographic sandpaper and cut it to the right size, fold it in half a few times, and gently rub it in the joint.
5, the charger or data cable is broken, it is recommended to change the data cable or charge.
6, battery damage if the above reasons are excluded, it is still unable to charge, and it is suspected that the mobile phone battery is damaged, please go to the local after-sales point for detection