Why Is My Phone Getting Hot When Charging. If your charger gets too hot to touch or if the plastic surfaces start to warp that does indicate a problem. When a phone gets hot the battery is usually the first place to look.

The battery CPU and screen. Look For Crashing Apps. Though the battery does not get hot it will go from 100 to 92 in 5 to 7 minutes of playing that game.
Best Temperature for phone charging.
Even moreso if the heat is coming from the back of the phone. There is no need to worry about. This has been a problem since I bought the phone 4 months ago. The issue seems to be mostly related to the iPhone 12 Pro but there are.

