How does ios 10 restore backup from icloud?

1. Click Settings > iCloud > Save and Backup on the iphone to see the backed-up data here, along with the "Last Backup" prompt and the date of the last backup.

2. go to iphone settings > general > restore, and then select "erase all contents and settings".

3. Select "Set up your device" in Setup Assistant, then select "Restore from backup", and then log in to iCloud.

4. After logging in to icloud, you can "select backup" and then select from the list of available backups in iCloud.