It is not clear how widespread the issue was (none of The Verge staff reported significant battery issues), but earlier this month, Apple Support’s Twitter account told customers complaining of low battery life that “applications were normal.” and your features need to be adjusted up to 48 hours after the update. update will fix them – iOS 15.4 brings the really easy-to-use Face ID update while wearing a mask, so it would be a shame if people did not want to report fear of battery issues. Thanks for the communication! We will be happy to help. It is normal for your applications and features to need to be customized up to 48 hours after the update. Let us ask you to contact us at a DM if this is still a problem after this time so we can help you look into it further. – Apple Support (@AppleSupport) March 19, 2022 Even if your battery is good, it may be worth updating it soon. Apple says iOS 15.4.1 (and macOS Monterey 12.3.1, also released today) contain security patches for issues that Apple says could have been exploited in the wild. Unfortunately, this kind of warning has become quite routine in Apple security newsletters – while indefinitely postponing updates has never been a good idea, it seems more important than ever to make sure your devices are running the latest version. their operating system. To update your iPhone, go to Settings> General> Software Update. To update your Mac, go to System Preferences> Software Update.