Typical current instability. It is recommended to change the original charging cable and charging head first, or change the data cable and charging head that you think is no problem to try to see whether the problem is the mobile phone, the problem of the data cable or the problem of the charging head? Check in turn.
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If there is a problem with the mobile phone, you need to find a after-sales replacement.
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If the charger is a problem, it is recommended to buy a big brand of quality guaranteed charger, poor quality charging head or data cable may have slow charging speed, current instability and a variety of problems.
You can change a fast charger, soon, if not, that is your phone has a problem, go to the after-sales