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I got my 13 pro in October 2021 and up until november 2022 it progressively got down to 90%. For some reason i had the idea to uncheck optimised battery charging and since then its stuck at 90%. I still get about 9h of SOT so I don't complain. iOS 15.7.1
 
I got my 13 pro in October 2021 and up until november 2022 it progressively got down to 90%. For some reason i had the idea to uncheck optimised battery charging and since then its stuck at 90%. I still get about 9h of SOT so I don't complain. iOS 15.7.1
That is interesting. I wonder what difference if any that makes.
 
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