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Question

Back up and restore your iPhone, iPad, or iPod touch using iCloud or iTunes
You can use iCloud or iTunes to back up the content on your iPhone, iPad, or iPod touch. When you have a backup, you can restore this content to your device anytime.
Choose a backup method
Use iCloud to back up your iOS devices if you want an automatic backup solution, you want to restore content to your device from almost anywhere using Wi-Fi, you don’t connect your device to a Mac or PC very often, or you don't own a Mac or PC.
Use iTunes if you frequently use the computer that hosts your backups, you don't have an iCloud account or don't want to use iCloud, you want on-site and networked backups, or you'd like to have a manual or secondary backup to use with your iCloud back up.
Get help deciding whether to use iCloud or iTunes to back up your content.
Back up using iCloud
If you're using iCloud, it can automatically back up your content. Use these steps to turn on iCloud Backup:
Tap Settings > iCloud > Backup. If you're using iOS 7 or earlier, tap Settings > iCloud > Storage

Answer 1

You have quoted an Apple support document, but provided no question. Why?