Before iOS 15 my iPhone 12 mini use to hold the battery charge over night pretty well, now on iOS 15 is dropping to 0 in couple hours!Hello guys, so this battery test video just came out and apparently it shows a good battery life increase in iOS 15 over iOS 14.8 for the iPhone 12 series. Can anyone confirm, deny? I'm on 14.8 and a bit hesitant to update