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I'm sticking to iOS 14.8.1 on my iPhone SE 2016.

Still feel burned by Apple's not having given me an option for it in iTunes when upgrading my iPad Air 2's OS. The 14.8.1 update only showed up as a choice with "over the air" synching. 2 hour battery hit with iOS 15. Hoping that 15.3.1 improves things.
 
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