On this issue I suggest that you can first check the following points, for example: check whether the charger is positive
often
2, check whether the charging data cable is positive
often
③, check the charging data cable plug
and
Whether the inside of the phone tail plug between the two is correct
often
Check whether the battery inside the phone is normal.
After the above inspection, if you are sure that it is normal or not, the problem may be that the charging control circuit inside the phone is abnormal or damaged.