Quote:
Originally Posted by vreihen16
My iPhone X's battery went dead in a few hours after the 16.4 update ran, but has since been back to normal. Some iOS updates require a major rearranging or cleanup of the flash RAM when they first install, which can chew up battery power until it completes.
FWIW, 16.4.1(a) has installed on both of my iPhones with no visible hits on battery life.....
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i installed 16.4.1a yesterday but that's just a security update... wouldnt affect battery
however since 16.4.1 - major battery loss