Your iPhone backs up to iCloud automatically every 24 hours, and only the three most recent iCloud Backups are retained, so it won't take long for your iOS 16 backup to be pushed out of the rotation. You can find the instructions on how to do this in our article on how to back up your iPhone.Īlso, keep in mind that you can't restore a backup made from a newer version of iOS onto an iPhone running an older version, so you may want to keep an extra backup on your Mac or PC just in case you later need to go back to iOS 16 for some reason.

Jesse Hollington / Digital Trends Back up your iPhoneĪlthough it's very rare to run into problems with an iOS update, it's still a very good idea to have a backup of your iPhone to fall back on just in case, especially with a major iOS update like this one.

For example, you'll need at least an iPhone 11 to use back-to-back Siri requests, while more advanced videoconferencing features like studio lighting, reactions, and gestures require an iPhone 12 or newer. Those models will all be left behind on iOS 16, but the good news is that as long as you have any other iPhone released in the past five years - that's an iPhone XS, XS Max, XR, or newer - you'll be able to update to iOS 17, although those older models may not be able to take advantage of all the newest features that iOS 17 has to offer. Most significantly, this is the end of the road for the 2017 iPhone X, the model that ushered in Face ID and the modern edge-to-edge iPhone design, along with the iPhone 8 and iPhone 8 Plus that came out that same year. Sadly, not every iPhone is compatible with iOS 17.

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