iPad Air 2 here:
iOS 15.1 much worse battery life compared to iOS 14.8!
Tip: Update to 14.8.1 — wirelessly— do not upgrade via iTunes, where you only have the option of jumping to 15.1 and aren't given the 14.8 to 14.8.1 option!
I found that out the hard way! Thanks, Apple, a whole bunch! /s
iOS 15.1 much worse battery life compared to iOS 14.8!
Tip: Update to 14.8.1 — wirelessly— do not upgrade via iTunes, where you only have the option of jumping to 15.1 and aren't given the 14.8 to 14.8.1 option!
I found that out the hard way! Thanks, Apple, a whole bunch! /s