A week ago Apple released its latest software update, iOS 11. And with any update from Apple, there have been a few reported glitches or user-related problems.\nBut one thing has made iPhone users angrier than anything else: how much iOS 11 drains a phone’s battery.\nREAD ALSO: Germany Offering Free Tuition To All Canadian Students\nTons of people have vented their frustrations on Twitter, complaining of the nonexistent battery life the new OS update causes.\nNot that they’re wrong to complain, because these battery-life issues are real.\nWandera, a global mobile security provider, compared the battery usage between iOS 11 and 10. The findings weren’t exactly uplifting.\nIt took 240 minutes (4 hours) for a fully-charged iPhone to deplete to zero on iOS 10, whereas it took 96 minutes (a little over an 1.5 hours) for the new iOS 11 to do the same.\nNot that these findings are definitive, because we’re not exactly sure what the study’s researchers were doing on their phones to deplete the battery life.\nStill, there are some fairly solid reasons why, right now, iOS 11 is draining your batter faster than you’d like.\nFor one thing, battery issues with a new update are pretty par for the course. That can be because the update is designed for the latest iPhone model, making it more of stress on older iPhones. It’s a clever ploy to always-be-upgrading we all know Apple employs.\nSecondly, most apps haven’t been updated for iOS 11 yet. Once they are, the amount of energy they use will likely level off.\nAn iPhone also has to sort through its own data after a new update, creating further battery drainage.\nSo yes, for now, your iPhone is probably going to burn through its batter quicker-than-normal on iOS 11. Just don’t expect that to last forever once all of your apps are updated and your phone has had some time with the software.