1, the reason for the charger, first check whether the charger and data cable are normal, you can try to replace the charger or data cable.
2, the charging port is blocked, check whether the charging port at the bottom of the phone is dirt, it is recommended to clean up and try again.
3, the battery sleeps, the battery is not used for a long time and thus sleeps. It is recommended to connect the power supply to charge a little more time. Generally, charging 1 hour can activate the battery to power it.
4, battery damage, most of today's smart phones are all-in-one, personal is not convenient to take out the battery, if the battery is damaged is willing to recommend to the repair shop to replace the battery processing.