If your iPhone 17 or iPhone Air has ever acted strangely at the exact moment the battery hit the danger zone, Apple has now pushed out a fix.
The company released iOS 26.5.1 on June 1, a small point update that does one very specific thing: it addresses a wired-charging problem affecting a limited number of iPhone Air and iPhone 17 users when their batteries are nearly drained. In Apple’s words, the update is meant for “a small number of users” whose phones may refuse to start charging once they’re close to empty.
That’s not a glamorous headline, but it matters. A phone that won’t take power when it’s basically dead is the kind of glitch that turns a bad battery day into a genuinely annoying one. Reports of the issue had been floating around for weeks, with some users saying their phones would only begin charging after they tried a wireless charger first. Lifehacker’s explanation of the bug earlier this spring described the behavior as a software quirk rather than a hardware fault, which is good news for anyone who worried they had bought a defective device.
Apple’s fix arrives just after iOS 26.5, a much larger release that brought encrypted RCS messaging, a new Suggested Places feature in Maps, Pride wallpaper and changes to subscription billing. That broader update also packed in dozens of security fixes, so iOS 26.5.1 is very much a maintenance release in the traditional Apple sense: short, targeted, and easy to overlook unless it solves a problem you actually have.
The charging bug is tied to Apple’s newest hardware, specifically the iPhone 17 family and the iPhone Air. Apple says the issue appears only under certain low-battery conditions, and the fix applies across those models. So if you’re carrying one of those devices, this is an update worth installing sooner rather than later — especially if you’ve already run into the problem once.
Installing it is the usual drill: open Settings, tap General, then Software Update, and follow the prompts. Apple also offers the option to schedule it overnight if you’d rather not watch a progress bar.
This isn’t the only recent Apple patch aimed at unpleasant edge-case behavior. The company has been busy tightening up everything from security flaws to enterprise bugs, including recent fixes in iOS 26.4.1 and the more security-heavy iOS 26.5 release. On the Mac side, Apple also shipped macOS 26.5.1, which fixes an issue causing some M5-powered Macs to unexpectedly shut down when using certain content-filtering network extensions — another reminder that point updates can be boring on paper and still save people a lot of grief.
For now, iOS 26.5.1 is narrowly focused, but that’s exactly why it’s worth paying attention to. Sometimes the most useful software updates are the ones that fix the problem you only discover when your phone is already at 1%.
