If, however, the handset is heating up without your intervention, it could all be down to the fast-charge setting.
In this case it could simply be down to the fact that you’re using the phone while it’s charging. Some users are reporting that their handset is getting too hot when charging. If you find that your Galaxy S7 is overheating, there are a number of ways to tackle the problem. The other advice, if you suffer from this issue, is to invest in a good chunky case, which typically puts an extra few millimetres between your fingers and the screen. Unfortunately, there’s no fix for this at present, other than that old iPhone 4 ‘Deathgrip’ advice: hold it differently. It can also cause issues when gripping the phone a certain way whilst trying to take a picture, with the shutter button proving unresponsive, or even when trying to type out a message on the keyboard. This can be a particular problem for the Galaxy S7 Edge, for obvious reasons. We’ve seen some Galaxy S7 users complaining that the display is simply too sensitive, and that the palm-rejection feature isn’t doing its job of filtering out incidental presses around the edges of the display.
Once your phone restarts, the power and volume buttons should be responsive again. While the power and volume buttons might appear unresponsive, holding the power and home buttons together should still reset the Galaxy S7.