What does iCloud back up? - Apple Support
support.apple.com › en-us › HT207428Feb 04, 2021 · If you're using iOS 10.2 or earlier, go to Settings > iCloud > Backup. Connect your device to a power source. Connect your device to a Wi-Fi network. Make sure that your device's screen is locked. Check that you have enough available space in iCloud for the backup. When you set up iCloud, you automatically get 5GB of storage.