As I said, it practically never matches the original battery life even if it improves relative to .0 releases.Every iOS release has its thing at the beginning. You can’t compare iOS start to iOS 18 end. Either compare the release or what it looks like in June.
Hindsight is great.
Funnily enough, I have a 6s on iOS 10.0 and another one on the final iOS 13 version. The latter is appalling. The former is like-new.
As I also said, this redesign is inherently more resource-intensive. It is likely not matching iOS 18 even on its final iteration. Let’s just hope that it catches up at least for the 17 series. Apple had never failed with an original version device. They did this time.