This may be caused by the data line interface or the charging protocol is not supported.
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The mobile phone can not be charged with wireless charging, which is likely to be your mobile phone tail plug is broken, through the line can not effectively charge the battery. If it brings you inconvenience, you can go to the after-sales service to change the phone tail plug at this time can be used normally. It is also possible that your phone charger and the phone model do not match to the charge.
The Mi 9 wired charge cannot be rushed in, but the wireless charge can be charged in. This is because wired charging needs to be connected to a charger, while wireless charging is charged by electromagnetic induction without needing to be connected to any device. Therefore, even if the Mi 9 wired charge does not go in, the wireless charge can still work normally.