After opening the dual engine flash charge, the charging current of the flash charge is larger, and part of the electric energy inside the battery will be converted into heat during the charging process, so a slight heat is normal, and the external ambient temperature will also affect the heat of the mobile phone.
When the charger is converted to voltage and current, there is energy loss, and the dissipated energy will cause the charger to heat, and the greater the charging current, the greater the corresponding heat.
May have high power consumption applications.
Using high power consumption applications (such as playing games, watching videos, live streaming, etc.) while charging will cause more heat, it is recommended that you use the phone after charging.