Every time there’south a big iOS update–either a major yearly release or a particularly feature-packed point release like iOS 15.4–you’ll find users complaining that their battery doesn’t last every bit long as information technology used to. On social media, users will complain of significant bombardment drops but hours after the update.
Those who follow this closely take maintained that this is to be expected. The operating system is performing background operations, optimizing all sorts of data, and sometimes doing stuff like re-scanning your photos with new machine learning algorithms, and this increases bombardment drain. Not to mention that battery management is handled by sophisticated algorithms that may need several charge-and-drain cycles to arrange.
In a rare official comment on the matter, the Apple tree Support Twitter business relationship confirmed this to be truthful.
According to Apple, fast battery drain is not unusual later on an iOS update but usually resolves itself within 48 hours. If yous’ve just updated (or restored) your iPhone and have noticed that your battery isn’t lasting every bit long as it used to, don’t panic. Just use it as y’all normally would for a couple of days and bank check again. If, after several days, yous notice your bombardment is still draining much more apace, it might warrant reaching out to back up to investigate the issue.