Why does the POCO F7 heat up when switching 5G hotspot?

Several factors will make the POCO F7 heat up when switching 5G hotspot, such the number of connected devices, the relevant hotspot settings, and charging the phone while enabling hotspot.
If the POCO F7 heats up when switching 5G hotspot, please refer to the following details:
1. Please limit the number of connected devices to reduce the processing burden on the phone;
2. Please adjust the relevant hotspot settings;
3. Please remove the APPs that are used less from the background;
4. Avoid charging while using the hotspot to cause heat generation.