It is normal for mobile phone chargers to generate heat when charging, and the main reason is that the charger uses a more efficient switching power supply.
Try to place the charger in a good ventilation and heat dissipation environment, do not attach objects to the charger, and charge in a suitable temperature environment.
At the same time, when charging the phone, the charger should be placed away from the heat source, such as the gas stove, steamer, etc., to avoid the ambient temperature is too high, causing the charger to overheat.
Charging heat is a normal phenomenon, electrical energy into chemical energy, any machine charging will be hot, but some mobile phone heat is small, it will be charged while playing heat is particularly obvious, so try not to charge while playing, if you feel hot, you can go to after-sales testing