Board Thread:Game Discussion/@comment-26388545-20180930020115/@comment-34243920-20180930022150

It's a battery thing. It might be leaking somewhere since it's a lithium ion. In smartphones these days there's also a little bit of thermal paste on the SoC unit that helps dissipate the heat, maybe that's gone. Either way you have to take your S7 to a Samsung repair centre or any other repair centre that's certified.