See our list of every version of iOS where you can see the latest versions and how long Apple supports iPhones for. Expect this step to take a while, especially if it’s on the night the software arrives! Your iPhone will then shut down, start up, and begin to install the software update. Now wait while your iPhone Verifies Update.Once the download has finished you will receive a notification that the update will install.Your device will then move onto Preparing Update, which also can take a while.In our experience this is very far from the mark: the reality can be double or even triple what this estimates! You can at least carry on with other things while the download happens. You’ll see an indication of how much time it is likely to take. Your device will download the update in the background.Enter your pin and agree to the terms and conditions.If an update is available you will see it.iOS will check if there’s a new version if there isn’t, you’ll see the message with the software version and “iOS is up to date.” Sometimes there’s a bit of a wait until the software becomes available, especially on a launch day. Before you begin, we strongly recommend that you back up your iPhone.If you are wondering how iOS 16 and iOS 17 compare read iOS 16 vs iOS 17: Why the next iPhone update is bigger than it seems. Another reason to hold off updating straight away is that it can be wise to wait a week or so until Apple issues iOS 17.1, which is usually a fix for any bugs that arrive with the first iteration. This means the process can take a lot longer and be more frustrating than it would otherwise be. First, on the day a major iOS update arrives, Apple’s servers can become overloaded. There are a few reasons why you might want to wait a little longer. Once iOS 17 is available you may want to quickly install it. The further into the testing process, the less risky it becomes to install the beta, but the beta process continues after the full version so if you want to avoid downloading buggy betas as Apple continues testing new features it’s worth removing yourself from the beta testing.

We explain how you can do that in How to install the iOS beta on your iPhone. Those who couldn’t wait until that date were able to join the Public Beta program and install iOS 17 as early as June (or July for the Public Beta).

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