Apple basically keeps selling the same body for many years. Sure, there are annual improvements to the camera; but they are so tiny that I hardly notice any significant differences. I guess this is a good thing, as Steve Jobs toted in the original launch of the iPhone; it’s the ability to change the software 6 months down the road if you want to.
There is a formulae here though, because people still upgrade regardless there is a minor change to the design or not.
I just look at the pics my iPhone X captures and ask my self every September, is it really time to upgrade?
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