ios 11 battery question
Hi, I am in a bind having to replace a damaged iPhone 6s as of last night, after it
was irreparably damaged (bent and logic board damaged). I can't recover anything
off of it, and have a backup 6s Plus on hand that i need to activate. The 6s Plus has
ios 11.2.2 on it. My 6s had 10-something and the battery life was quite good. I read
a lot of disturbing stuff about the iOs 11+ battery though..and even just powering it
on for a few minutes, the battery dropped 5 % or so with all the usual stuff turned off
like background refresh...reduce motion... (i play all those tricks ) - Haven't checked
out the 'health' of this particular battery but meantime, what are my options if i wanted
to A) get it back to 10.3.3 or 10.3 , (i suspect not) or otherwise can i expect better battery life if i
advance it to the latest version of ios 11? Or a "different" version of iOs 11 if that's doable?
Any advice majorly appreciated, Thank you very much!
Mike in Mich
iPhone 5s, iOS 10.3.3, Wanted to stay on 10.3....or 8 or 9