My XS constantly heats up. I can’t listen to music and have a navigation map open/have the phone charging. If either of these combinations are happening simultaneously, my phone will heat up quickly and no longer work. I’m tired of it. I have an old car, so I have to decide between the three and choose one if I don’t want my phone heating up and not working. Meh. I’m so tempted to try the Pixel 6 when it releases because I’m tired of these quirks with iOS.
I have an old car, too. It’s almost 30!!! I have two other vehicles in my name but they’re old, too. Not three decades old, but old enough so I’m basically in the same situation as you.
Sorry to hear your iphone is heating up, too. The first time I ever ran across this was when I got my 7 Plus. That phone was a surprise Christmas gift.
I loved that phone, loved that it was a surprise gift, and so I planned to keep it for 2 years or more. But there were two iOS updates that it got soon after I got it and then it just started getting all kinds of issues. It overheated a lot. The battery died fast. I forget what all it did wrong but those updates seemed to ruin it. So when the warranty was up I got the 8 plus. That year I did have some overheating with an S7 that replaced my Note 7. That was not a good year for me with phones!
My Pixel 3 does heat up quite a bit. I’m not sure what’s going on with that.
But with iPhone I worry it’s iOS. I’ve had stuff like this happen with my iPad mini before, too. So I can’t believe it’s all hardware related.
But some of it may be. I do know when a sunbeam hits any of my iPhones they heat up immediately.