iOS 26 is worth installing on most iPhones and iPads, but the timing depends on your device age and how much you rely on older apps
Apple releases major iOS updates once a year, usually in September. iOS 26 will arrive as a free update to any iPhone or iPad that supports it — typically devices from the last six to eight years. The update patches security holes, fixes bugs, and adds new features, but it also changes how your device works and sometimes breaks apps that haven't been updated by their creators.
The real question isn't whether to install it eventually, but whether to install it on day one or wait a few weeks. Day-one installation means you get security patches when ready, but you also risk hitting bugs that Apple hasn't discovered yet. Waiting a few weeks lets other people find those bugs first, and it gives app makers time to update their software so nothing breaks on your device.
Key Takeaways
- iOS 26 will be free and will arrive as an automatic update notification on your iPhone or iPad, so you do not have to hunt for it.
- If your device is older than six years, check Apple's official support page to confirm your model can run iOS 26 before you plan around it.
- Security patches in major updates close holes that real attackers are already exploiting, so waiting more than a month puts your device at risk.
- Apps that haven't been updated in two or more years may stop working after you install iOS 26, so check your most-used apps before you update.
- You can delay the installation for a few weeks to let bugs surface and app makers catch up, but installing within a month of release is the practical balance between safety and stability.
Check whether your device can run iOS 26
Apple's official support pages list which iPhone and iPad models support each iOS version. iOS 26 will not run on every device — typically, iPhones older than about eight years and iPads older than about ten years will be left behind. If you have an iPhone 12 or newer, or an iPad Air from 2017 or newer, you are almost certainly supported.
The reason older devices stop receiving updates is hardware: the processor, memory, and storage in a 2015 iPhone straightforward cannot run the same code as a 2024 iPhone. Apple stops supporting a device when the gap becomes too large. You can find the exact list of supported models on Apple's website by searching "iOS 26 compatible devices" — that page will be published before the update arrives.
Understand what happens to your apps when you update
Most apps work fine after an iOS update because their creators test against new versions before release. But apps that haven't been updated in two or more years sometimes break. The app might crash on launch, refuse to open, or lose features. This is not Apple's fault — it is the app maker's responsibility to keep their code compatible.
Before you install iOS 26, open the App Store and look at your most-used apps. Tap each one and scroll down to see the "Information" section. If it says "Last updated" more than two years ago, that app is at risk. Check the app's reviews to see if anyone mentions crashes after updating iOS. If an app is critical to your work or life, wait a week after iOS 26 releases and search for "app name iOS 26" to see if other people have reported problems.
Decide whether to install when ready or wait
Installing on day one gets you security patches right away, which matters if you use your device for banking, email, or anything sensitive. But day-one installs also expose you to bugs that Apple's testing didn't catch — things like battery draining faster, Wi-Fi dropping, or the camera app freezing. These bugs are usually fixed within a week or two, but they are annoying while they exist.
The practical middle ground is to wait three to seven days. By then, millions of people will have installed iOS 26, and the most obvious bugs will be reported. App makers will have started releasing updates. You still get the security patches within a week instead of waiting a month, and you avoid the worst early problems. If you use your device for work and cannot afford downtime, waiting two weeks is reasonable — just do not wait longer than a month, because security holes in iOS are actively exploited by the time a month has passed.
How to install iOS 26 when you are ready
You do not have to do anything special to get the update. When iOS 26 is released, your iPhone or iPad will notify you that an update is available. You can install it when ready by going to Settings, then General, then Software Update, and tapping "Install Now". The device will restart during installation, which usually takes ten to twenty minutes.
Plug your device into power before you start, because the installation will fail if the battery dies. Do not use the device while it is updating — just let it sit. If you want to delay the notification, you can go to Settings, General, Software Update, and tap "Automatic Updates" to turn off the automatic reminder. The update will still be available whenever you choose to install it.
What to do if something breaks after you install
If an app crashes or a feature stops working after you install iOS 26, the first step is to force-close the app and restart your device. Many problems fix themselves after a restart. If that does not work, check the App Store to see if the app maker has released an update — they often push fixes within hours of a major iOS release.
If the app has not been updated and you need it to work, you have limited options. You can contact the app maker to report the problem, but if they have not updated the app in years, they may not respond. Some older apps are no longer maintained, and iOS updates will eventually break them permanently. In that case, you may need to find a newer app that does the same thing.
Frequently Asked Questions
Will iOS 26 slow down my older iPhone?
Major iOS updates sometimes feel slower on older devices because the new code is more complex and uses more memory. An iPhone from 2018 will likely feel noticeably slower after iOS 26 than it did before. If your device is already slow, iOS 26 may make it worse. This is one reason to check your device's age before you commit to updating.
Can I go back to the old iOS version if iOS 26 breaks things?
No. Apple does not let you downgrade to an older iOS version once you have updated. If iOS 26 causes serious problems, your only option is to contact Apple Support or visit an Apple Store. This is another reason to wait a week or two before installing — you cannot undo the update.
Do I have to install iOS 26 eventually?
Not when ready, but yes, eventually. Apple stops supporting older iOS versions after about two years, which means they stop releasing security patches. If you wait too long, your device becomes a target for hackers. The practical important date is about one year after release — by then, you should have installed it.
Will iOS 26 use more storage space on my device?
Yes, usually. Major iOS updates are larger than minor updates and take up more space during installation. If your device has less than 5 gigabytes of free space, the installation may fail. Check Settings, General, iPhone Storage to see how much space you have. If you are close to full, delete photos, videos, or apps you do not use before you update.
What if my device is not supported and cannot run iOS 26?
Your device will keep running its current iOS version indefinitely, but it will stop receiving security updates within a year or two. At that point, using it for sensitive tasks like banking becomes risky. You will eventually need to replace the device, but you can keep using it for less critical things like reading or watching video.