There are a billion iOS devices out there. It only stands to reason that for a LOT of these devices, battery performance would hit a critical level at around th

There are a billion iOS devices out there. It only stands to reason that for a LOT of these devices, battery performance would hit a critical level at around the same time iOS 11 got installed, just by coincidence. In addition, new iOS installs create a lot of extra battery load, increasing the chances of this occurring.