iOS 15.1.1 fixes critical iPhone bug — update now

iphone 13 pro display on laying on desk
(Image credit: Tom's Guide)

You might have noticed an update for your iPhone in the last day or so. Apple put out iOS 15.1.1, which addresses a critical bug for the iPhone 12 and iPhone 13. What bug you ask? Since iOS 15.1 landed last month, some users have noticed calls dropping more often than they ought to. 

That's obviously not ideal, so iOS 15.1.1 is an important update to install ASAP. Most of our iPhone 13 units received the update last night, and I noticed it was quite substantial at 2.2GB on my iPhone 13 Pro Max. So just be sure you start the update process while you're comfortably in your home or office so you don't accidentally have an inoperable phone while it updates itself.

We're not sure what caused this call dropping bug, but since it only seems to have affected the iPhone 12 and 13 series, I'd wager it has something to do with 5G. Apple hasn't disclosed what exactly occurred, so my guess could be off.

If you've experienced this bug on your iPhone 12 or iPhone 13, be sure to update to iOS 15.1.1 as soon as you can, if you haven't already. Other iPhones — including the 6S and above — will still get the point version update, but we don't know if any of the non-5G devices benefit in any way. Apple just likes to have all supported devices on the same version, which we think is best.

Hopefully, iOS 15.1.1 doesn't introduce new bugs, because it can take a few weeks to address them. As we approach iOS 15.2, whenever that is, we'll keep our eyes out for the new features you can expect. If you're still discovering all of the new features, be sure to check out our iOS 15 review to get the lowdown on everything that's new for your iPhone.

And if you're on the lookout for great discounts, check out our iPhone 13 Black Friday deals page. 

TOPICS
Jordan Palmer
Phones Editor

Jordan is the Phones Editor for Tom's Guide, covering all things phone-related. He's written about phones for over six years and plans to continue for a long while to come. He loves nothing more than relaxing in his home with a book, game, or his latest personal writing project. Jordan likes finding new things to dive into, from books and games to new mechanical keyboard switches and fun keycap sets. Outside of work, you can find him poring over open-source software and his studies.

Read more
iPhone lock screen showing Control Center shortcuts and the iOS 18 logo
iOS 18.3 is available now — here’s the new features for your iPhone
iOS 18 home screen customization features
Apple will no longer allow users to downgrade from iOS 18.3 — here’s why
iOS 18 Notes
iOS 18.3 beta just arrived — here's what's changed
Apple iPhone 16 held in the hand.
iOS 18.3.1 — update your iPhone right now to fix critical zero-day vulnerability
iPhone 16 Pro Max shown in hand
iOS 18.4 has dropped — 5 new iPhone features to try first
iOS 18 logo show on iPhone.
11 iOS 18.2 features to try on your iPhone first — that aren't Apple Intelligence
Latest in iPhones
iPhone 17 Air render
iPhone 17 Air could be just 5.5mm thick — but 9.5mm when you throw in the camera bump
iPhone 16
Hoping for a new iPhone 16 color? Here's why that's looking unlikely
iOS Photos app
iOS 18.4 Photos update makes it easier to sort, hide and delete your photos on iPhone — here’s what you can do
The iPhone 17 Air next to an iPhone 16 Pro Max
iPhone 17 Air could be this thin — new photo vs iPhone 16 Pro Max
iPhone 16 Pro Max shown in hand
iOS 18.4 has dropped — 5 new iPhone features to try first
iOS 19 logo on an iPhone
iOS 19 just tipped for 'most dramatic overhaul' in Apple's history
Latest in News
HomePod with display concept render
Apple HomePod with display now rumored for late 2025 launch
The Apple Watch Series 10 on display at the device's launch in September 2024
Apple Watch sales plummet 19% as smartwatch market declines for first time
Google's Project Astra working on prototype smartglasses in an advertisement
Google just acquired this eye tracking company — hinting at the return of Google glasses
iPhone 17 Air render
iPhone 17 Air could be just 5.5mm thick — but 9.5mm when you throw in the camera bump
Sterling K. Brown in Paradise
Hulu top 10 shows — here's the 3 worth watching right now
iPhone 16
Hoping for a new iPhone 16 color? Here's why that's looking unlikely