Why does the POCO F7 Pro heat up when charging?

The POCO F7 Pro is equipped with 90W fast charging technology, and the charging speed is at a relatively high level. Charging the phone when it is shut down will be accompanied by a certain amount of heat generation, which is a normal phenomenon. The temperature rise is within the safety standard and can be used with confidence.
Additionally, it is recommended that you place the phone in a relatively open area when charging, reduce contact and wrapping with fabrics such as clothes and quilts, ensure a good heat dissipation environment, and effectively reduce the temperature. Besides, it is recommended to reduce the frequency of phone use during charging and use the standard charger to improve the temperature rise experience.