The flaw means that if a phone’s time zone is changed, manually or automatically, the percentage display for the battery doesn’t update, potentially tricking a user into thinking that their phone will last longer than it really will.
Users on Apple support forums have complained about this problem for several months. One comment dates as far back as September.
“My iPhone 6s Plus battery percentage gets stuck frequently. Like for example, it will say 87 percent all day, and then I’ll plug it in for an hour, and it will still say 87 percent,” the person wrote.
“The only fix I’ve found is to power the phone off and then turn it back on. Then the percentage will update correctly, and will usually continue to update properly for a while. But eventually it gets stuck again.”
Source: New feed