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1, iPhone13 in the charging time, especially the use of more than 20W charger charging heat is a normal phenomenon, almost any mobile phone in the use of fast charge will appear mobile phone fever.
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2, one way is not to play the mobile phone when charging, such as watching videos, playing games, so that the mobile phone fever will be more serious, while the battery is also relatively large damage.
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3, if you do not worry about the phone battery full, you can also consider using a lower charging power charger, relatively speaking, the phone will be less hot, but the charging time will be a little longer.
In the process of fast charging feel a little hot, this is a very normal phenomenon, for example, before charging to 70% power, the charging speed is relatively fast, this period of time the mobile phone will appear fever, after charging to 80% will enter a trickle state, this time the mobile phone has no heating problem. Mobile phone charging heat is mainly because the charging power is high, so it will heat, which is a normal phenomenon, if you do not want the mobile phone to be too hot, but you also need to pay attention to, do not play with the mobile phone while charging, which will cause battery loss.