1, different brands of chargers, there are differences in charging specifications and fast charging principle, mixed charger not only can not achieve fast charging function, but also may appear slow charging, unable to charge slowly, in addition to lead to the risk of damage to the phone and charger, please use the standard charger to charge.
2, charging charger, data cable, mobile phone charging interface is not in contact, may lead to slow charging, unable to charge the phenomenon, please plug and unplug the charger several times.
3, please check whether the joint and jack are clean, if found dust, it is recommended to wipe with alcohol or clean with a brush. If alcohol wipe, need to wait for alcohol to dry, and then re-charge to confirm.