You can unplug it, let it cool for a while, and then charge it! Replace the high-quality charging cable, heat represents overload! The high-power fast charger will be relatively hot during use, and the use of slow charging will be less hot.
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If the charging is normal, the data line is hot, indicating that the quality of the line is relatively poor, the core of the line is too thin, it is recommended to replace a new and better one, this one does not need to be thrown away, can be used to transmit data, charging can be used occasionally.