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Day to day, anything past an iPhone 6s or 7 and phones pretty much feel the same speed. If you game or edit pics or anything else that needs a faster proc, sure, you'll notice not having the fastest phone. But if you email, reddit, HN, twitter, etc, you're really not going to notice much. Rumors are the iPhone 14 will have the same A15 and only the Pro will get the A16. I think you'll see a bunch of people freak out about this, but honestly, phones really don't need to be faster at this point. |
Switching apps, latency for apps to restore state once you switch to them, latency for the camera to save a photo, latency on pretty much all interactions is noticeably better.
I'm not talking about dropped frames, Apple have always been good at ensuring a fluid user experience, but there are lots of points where apps can take a few seconds to do something on older hardware, or do it nearly instantly on newer hardware.
Does a few seconds make a difference? To my life, no. To my enjoyment of using the device, yeah. Whether it's worth frequent upgrades or not is a value judgement we can only make for ourselves, but there are many perceptible differences devices more than a few years apart.