If you have iTunes 11, click the Library button in the upper-right corner.

If you have iTunes 11, click on the device’s icon in the upper-left corner of the iTunes window.

You can also get iOS 11 from a Mac or PC via iTunes. How to download and install iOS 11 from iTunes on your PC and Mac

Alternatively, tap Install Tonight or Remind Me Later to schedule the installation for a more convenient time.

Tap Software Update, and wait for a notification about iOS 11 to appear.

Open the Settings app on your device and tap on General.

The easiest way to get iOS 11 is to install it from the iPhone, iPad, or iPod touch you want to update. How to download and install iOS 11 from your iPhone, iPad, or iPod touch

After the process ends, check to see if the backup finished successfully by clicking iTunes Preferences > Devices (on a Mac) or Edit > Preferences > Devices (on a PC).

If you don’t need to save your Health and Activity data, just click Back Up Now.

If you want to save Health and Activity data from your iOS device or Apple Watch, you need to encrypt your backup by selecting Encrypt and creating a passcode.Select your iPhone, iPad, or iPod touch when it appears in iTunes.If a message asks for your device passcode or to Trust This Computer, follow the onscreen steps.Make sure you have the latest version of iTunes installed, start it up, and plug your iOS device in.Here’s how to back up an iPhone, iPad, or iPod touch using iTunes: If you’d rather back up your device using a computer, iTunes has a built-in backup function. If you’re using iOS 10.2 or earlier, tap Settings > iCloud > Storage > Manage Storage and select your device from the list. To make sure that the backup completed, open Settings, tap on your name > iCloud > iCloud Storage > Manage Storage, and select you device.(If you’re using iOS 10.2 or earlier, tap Backup.) Make sure that iCloud Backup is turned on. (If you’re using iOS 10.2 or later, scroll down and tap iCloud.) Open Settings, select your name, and tap iCloud.Connect your device to a Wi-Fi network.Here’s how to back up an iPhone, iPad, or iPod touch using iCloud: There are two ways to back up an iPhone, iPad, or iPod touch: Via iCloud, or via iTunes on a PC or Mac. That way if something goes wrong, it’s relatively easy to restore things to the way they were. Before you update to iOS 11, it’s a good idea to back up your device’s data.

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