You can also set up your phone to automatically install iOS updates. Turn on automatic downloads by sliding the toggle next to Download iOS Updates. It's also a good idea to back up your iPhone before any big iOS update, archiving the update in case you need to go back and restore your iPhone to an earlier iOS should something go wrong.

Similarly, you can use cellular data to download the update, but it's advisable to use Wi-Fi if you don't have spare data or an unlimited data plan. Still, it's probably best to plug in, especially for large updates like the iOS 16 update. Neither are strictly necessary - we installed this update while not hooked up to a power source, so if you have full battery and are installing a smaller update, you probably won't run out of juice. Make sure your device is charging and connected to Wi-Fi. Read on to see more detailed instructions for each step.ġ. If an update is available, tap Download and Install.

Charge your device if possible while upgrading.Back up your phone before any major iOS update.

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