This video will walk you through backing up your iOS device to iCloud via the backup now command. If you have iCloud backup enabled with enough iCloud storage available your iOS device will backup every time it’s locked and charging. Although there comes times when your device hasn’t backed up in weeks or heaven forbid months. This video will show you where to find that information.
When this video was made the current operating system was iOS 10.3.x earlier/later operating systems may have different Settings layouts.
If you would rather back your device up to your computer watch this video How To: Back Up your iPad, iPod, or iPhone to your computer