Apple is usually pretty good at keeping older phones performant enough but,
This is the first upgrade cycle that I upgraded in anger over an unusably slow and energy inefficient OS on an “older” model
I was traveling in south / south east Asia and my iPhone 15 Pro was dying twice a day despite minimal use besides maps and taking some photos. My battery health was 86% so not perfect but surely it shouldn’t die twice a day.
That coupled with the keyboard constantly lagging with every letter I typed made me realize Apple no longer cares about older models.
They threw that out with Liquid Glass.
I wish Android wasn’t also closing off their ecosystem.
The 15 Pro was an especially poor model as the cooling wasn't up to snuff. She be a throttlin'.
My 14 Pro Max has been a champ (though I never upgraded to Liquid Ass, iOS 18 for life on this thing). I have almost zero real reason to upgrade, esp since it'll only cost me $100 or so to have the battery replaced in a few months (I'm at 84% and treating it poorly to get it to a point I can justify the expense).