iOS 18 problems & errors with solutions for iPhone & iPad

Issues and bugs following the update to iOS 18 are quite common and are not always Apple’s fault. Find out what the most frequent iOS 18 problems are and how you can fix them.

The long-awaited iOS 18 update is now available for download on iPhones. It was previously available for testing through the OTA system as a beta version. As with previous updates, iOS 18 may encounter some issues. While many can be resolved with a few simple steps, some may require the help of individual developers.

Along with numerous improvements and optimizations for the iPhone, iOS 18 also brings several new features.

These include:

- Personalized Lock Screen
- Clownfish Wallpaper
- Widget information at a glance
- Live Weather view
- News ticker on the lock screen
- Anti-spy Lock Mode
- Privacy tool “Safety Check”

iOS 18 Problems & Errors

Now we turn to the frequently reported iOS 18 problems that have surfaced on many iPhone devices following the update. Our suggested fixes are based on methods that have worked for previous iOS versions. Of course, at the end of this post, you’ll have the chance to share your solutions for specific iOS 18 problems as well.

Note

During the iOS 18 update, your iPhone or iPad might restart multiple times. We recommend manually restarting the device again after the update is completed, which can help fix potential issues in advance.

Contents

AI Problems with iOS 18
iOS 18 Compatible Devices
Bluetooth Issues
Update Issues
Apps Not Working
Battery Drain
SIM Issues
Mobile Data & Calls
Storage

AI Problems with iOS 18

With the latest iOS update, several AI features powered by Apple Intelligence have been introduced, and more will be added over time. It remains to be seen how well Apple AI performs on the iPhone and what issues might arise with Apple Intelligence. If you experience any problems with Apple AI on your iPhone, we encourage you to report them at the end of this post.

iOS 18 Compatible Devices

To use Apple Intelligence, which will be released with iOS 18, the device needs sufficient power. Accordingly, this only works with newer models, ideally with at least an A17 processor. iOS 18 should also be possible on older models, but with limited functions.

iOS 18 is compatible with the following devices:

iPhone 15
iPhone 15 Plus
iPhone 15 Pro
iPhone 15 Pro Max
iPhone 14
iPhone 14 Plus
iPhone 14 Pro
iPhone 14 Pro Max
iPhone 13
iPhone 13 mini
iPhone 13 Pro
iPhone 13 Pro Max
iPhone 12
iPhone 12 mini
iPhone 12 Pro
iPhone 12 Pro Max
iPhone 11
iPhone 11 Pro
iPhone 11 Pro Max
iPhone XS
iPhone XS Max
iPhone XR
iPhone SE (2nd generation)
iPhone SE (3rd generation)

Bluetooth Issues

After updating to iOS 18, some users have reported that Bluetooth connections with previously paired devices don’t always work smoothly. In many cases, the solution is to unpair and then reconnect the device.

Update Issues

Some users are already facing issues with the iOS 18 update itself, struggling to install the latest version. Sometimes, the update doesn’t start or gets stuck at a certain percentage. Longtime Apple users may be familiar with these problems from previous versions.

Since the official release of iOS 18, Apple’s servers might be overloaded, which could temporarily prevent the download. In such cases, it’s best to wait and try the update again later.

Apps Not Working

As with any iOS update, some apps may stop working on your device. This usually isn’t Apple’s fault but rather an issue with the app developers. If you encounter problems with an app after updating to iOS 18, you should contact the developer. Most often, an update will soon be released to make the app compatible with the latest iOS version.

Battery Drain

It’s difficult to say whether iOS 18 will cause your battery to drain more quickly since many factors can affect battery life. After an update, changes in apps or settings may influence power consumption.

If you’d like to reduce battery drain under iOS 18, check out our guide: “Reduce Battery Usage on iPhone.”

SIM Issues

In rare cases, your SIM card may not be recognized after updating to iOS 18. Some users have found that updating the carrier settings or downloading them again from the mobile carrier resolves this issue.

Mobile Data & Calls

Some users report that after updating to iOS 18, they can no longer make calls or use mobile data. We recommend restarting your phone and checking your carrier settings.

Storage

Some users see a message after the update saying “iPhone Storage Almost Full” even though there is still plenty of space available. This bug appeared in the iOS 18 beta and doesn’t seem to have been fixed yet. However, the message is harmless and only a minor annoyance.

These were the most common iOS 18 problems and errors after the update. If you know of any other iOS 18 problems or iOS 18 errors, feel free to share them in the comments section below.

Report iOS 18 problems

Below you have the opportunity to report iOS 18 problems on your iPhone or iPad. This gives other users the opportunity to help you with these problems.

Report a iOS 18 problem