In addition to iTunes and iCloud backup, you can also use DearMob iPhone Manager to fully or selectively backup iPhone. It’s an easy-to-use tool to backup and restore iPhone data, backup single file type like photos, videos and etc. No storage limits. See how to backup iPhone here: https://www.5kplayer.com/iphone-manager/how-to-backup-iphone.htm
In this video, I’ll show you everything you need to know about iPhone Backups.