Whatever you say to convince yourself that your Xs Max is just as good on iOS 17 as it was on iOS 12.
You know, I actually don’t dislike or disagree with that opinion. I do think that this is a case in which ignorance is bliss. I would actually recommend everyone who chooses to update as far as iOS devices will go to never track, check, or otherwise care about battery life at all.
It’s very funny, but like I have often stated, my 9.7-inch iPad Pro was forced from iOS 9 to iOS 12. Had I never tracked battery life, iOS 12 is close enough to iOS 9 that I am actually unsure whether I’d know the exact extent of iOS 12’s degradation, especially considering that performance is almost perfect on iOS 12.
I’d be so much happier about my 9.7-inch iPad Pro’s increased compatibility (compatibility which I’ve appreciated as I’ve been able to use my iPad for more things than I would’ve had I kept it on iOS 9, I’ve downloaded apps I wouldn’t have been able to download if I hadn’t been forced to update), and I’m honestly pretty convinced about this: battery life is good enough on iOS 12. Good enough for what? Good enough for me to underestimate the difference when compared to iOS 9 if I hadn’t tracked it through the device’s entire lifespan. Good enough for it to be completely usable, and I’ll go further: good enough to have the same positive experience I had on iOS 9, even if it is significantly worse.
In practical terms, I’d be better off being ignorant about this difference. I want to be extremely clear about this: ignorance here is positive and this is in no way any sort of criticism. I wish I were ignorant about this. Like I said, I’d be happier with my device, and ultimately that’s the only thing that matters. Who cares if battery life is worse as long as you’re happy with it.
Am I happy with my 9.7-inch iPad Pro’s battery life? It depends. Can I factor in the knowledge that iPadOS 16 obliterated it to about 5 hours instead of the 10-11 hours I get on iOS 12? If I can, the answer is yes. On absolute terms, the answer is no: Apple forced an update which reduced it by 3-3.5 hours. But if I didn’t know about that 3, 3.5-hour reduction, I don’t think I’d notice the difference, especially now: too much time has passed. The last battery cycle on iOS 9 on my 9.7-inch iPad Pro was on September 15th, 2019. I would’ve noticed a reduction probably, but I’m pretty sure I’d have underestimated the numbers.