If it is the original charger or genuine, the general problem is not large, and the hot hair of mobile phone charging is a normal phenomenon.
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In general, when charging a mobile phone, there will be some energy loss in the process of energy conversion, and electrical energy will be converted into heat energy. This is more obvious when you use a wireless charger to charge your phone. When using a wireless charger to charge, the wireless charging transmitter is relatively close to the receiver, and the mobile phone will naturally heat up, which is also a major difficulty in the development of wireless charging
Don't keep charging. The charger has alternating currents in the work, and it will heat slightly, which is a normal phenomenon. If the head of the charger is particularly hot during the charging process, it is recommended to stop charging. Mobile phone chargers are getting smaller and smaller, but the power is getting bigger and bigger. The compact charger design is relatively easy to carry, and is loved by manufacturers and users. However, the internal space is very tight, and the heat dissipation can not be well satisfied.