Apple may reduce the performance of the 3nm A17 Pro processor due to massive overheating of the iPhone 15 Pro::The problem of overheating of iPhone 15 Pro and Pro Max smartphones is becoming widespread. It is possible that Apple will be forced to take the unpopular step of reducing the performance of the latest 3nm A17 Pro chip.
How does something like this not show up in tests?
During tests they were holding it wrong.
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It does.
Usually engineering and R&D sees these things, but they are too scared to contradict ambitious timelines set up by management.
Or marketing. I've heard innuendo that at Apple, marketing has vetoes
They just figured oh well it works well in Cupertino. They omitted the fact that Cupertino doesn’t get super hot, ever.
People have used it in very hot areas and it has been fine, with no overheating issues.
People have used it in very temperate areas and it has turned into a small furnace.
The controlling variable is almost certainly not ambient temperature.
I can assure you it did, they just hoped no one would notice
I could see a case made for the test units having much better heat transfer and once mass produced the silicon lottery inevitably made some chips run hotter. But those variances are not massive, so it would've already had to run pretty hot. IDK
When developing a product you order "process corner" chips that are primarily used for testing the memory timings (through a process called Shmoo) to make sure it is stable. The "FF" class of these chips are also useful for testing thermals as they draw the maximum power you will see with the silicon lottery. So assuming Apple did this properly they should have had a good idea of what the product temperature is at the operating temperature extremes.
Interesting, so SOP would rule that out too. I didn't know this.
Oh they knew. Apple is just pure scum.
It does. But what is hot to me is different than what is hot to my wife. My 11 pro gets really hot if you fast charge it.