[Strom]

The situation is perhaps even worse on iPhone 6, which I have. It feels like Apple doesn't test iOS on older hardware. For example the camera app has rotation freezing problems [1] half the time I open it. It's not a rare occurance, it's a constant issue. It's not a case of slow hardware either, because there are still plenty of times when everything works smoothly.

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[1] When I rotate the phone, half the UI elements react to the rotation and update, but the other half of the UI remains at the previous mode. So I have a UI which is half landscape, half portrait. Depending on the mood of the iPhone, the UI will fix itself in either a second, 5 seconds, or not until I restart the app.

[passivepinetree]

I'm still clinging to iOS 10 on my plain 6. It sounds like you'd recommend I don't update; is that true?

[ambivalence]

If you're using Apple CarPlay, don't upgrade (yet?). On iOS 11 it cannot even keep up playing music without glitches. Crashed twice on me when receiving a phone call. Never had those issues on iOS 10.3.

Rebooting helps. Feels like trying to use Windows on a cheap desktop to watch an HD movie in 2001.