Why is my iPhone 7 plus is getting hot

Too much usage from an application or background app can make it overheat. Like for instance if you are on Facebook and playing a live stream it will start to overheat because it has to use more RAM and CPU to get it to keep at a steady pace with the app.

Some apps use too much of your CPU and will make it overheat even if it is a small application. Pokémon Go is one of the reasons why it over heats especially with other apps. Too many background apps, too many apps on your iPhone, too much storage being used, too many notifications.

There's a lot and that's also includes Photos too and FaceTime, calling somebody, there's a lot but just put it on airplane mode so it doesn't get so hot and turn on your wifi. It helps reduce the amount of CPU usage being used.

Ashleycoles111111,

What are you doing when it gets hot?

If it is getting really hot for no apparent reason, make a genius bar appointment and have the hardware evaluated.

Genius Bar

Let us know how it turns out.

You have somehow gotten a bug on your phone, get a samsung.

The first issue is to define what is overheating. The phone getting warm is not overheating.

Live streaming on Facebook should not overheat any iPhone and it isn't in the background. It does not necessarily use more RAM but it may use more CPU. It will also get hotter depending upon the strength of the connection to WiFi/Cell Data.

Unless an app is defective and somehow slipped by Apple (doubtful) then it should never make too much use of the CPU as there are many things in place to prevent this. Pokemon GO can use a lot of power because of the video display, GPS use, etc. and is not a small app. There are very few apps that actually run in the background on an iPhone (most of those are music apps) but there are many that can do background updating but these should not cause any rise in heat. Too many apps (whatever that means) on your iPhone won't cause anything other than using up storage space and you would have to get almost a constant stream of notifications to raise the temperature of an iPhone.

I'm not sure what Photos has to do with an overheating iPhone. FaceTime does use a lot of battery and can warm up the iPhone but again it depends on what the definition of overheating is. I've never had it overheat my phone. Putting the phone in Airplane mode makes no sense unless you are in a marginal reception area. Airplane mode does not reduce CPU usage.