I'm on the latest iOS and I haven't felt it be any slower than iOS 9 back when I first got one. I do see it shut down at an arbitrary percentage below 10% (wher

I'm on the latest iOS and I haven't felt it be any slower than iOS 9 back when I first got one. I do see it shut down at an arbitrary percentage below 10% (whereas it would previously run until 1% and get slower), and I can no longer run 32-bit apps, but that's about it.