one
You can try to physically cool down, such as putting it in the air conditioning vent, and then check what power-consuming procedures are opened after the temperature drops, and close it.
two
If your phone is already hot, turn it off immediately.
three
When the heating trend is relatively large, it may be that the use of time is too long, you can take a rest, turn off GPS positioning, WiFi, Bluetooth, etc., or direct flight mode.