Apple has acknowledged user complaints that iPhone 15 and 15 Pro phones are overheating, reports Forbes, but said that contrary to speculation, it has nothing to do with the phone’s hardware design. Forbes noted an update to Instagram has already rolled out with version 302, released September 27th, to address some of the issues.
I’m well aware of the reference.
My point is that, unlike the iPhone 4, this likely isn’t a silicon or enclosure issue. If it was, it wouldn’t be hitting the old repurposed last gen stuff too. We’re also getting reports of apps in iOS 17 heating up older devices and iPads. It’s the new OS, SDKs, and certain apps that haven’t been updated for iOS 17.
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Looks like it’s an OS bug that is causing some processes to cycle over and over and over. Looks like it’s just a bug fix and making sure 3rd parties have properly updated for iOS 17.