If you turn on iCloud Photos, your content is also automatically stored in iCloud. When you use Messages in iCloud, Health data on iOS 12, or Voice Memos, your content is automatically stored in iCloud. Day One Sync requires a Plus or Premium account status.
Learn how to back up your device using iCloud or how to manage iCloud storage and delete backups that you no longer need. Backup to NAS, mobile storage device or personal cloud NAS, remote server and personal cloud Securely backup photos & videos directly from your iPhone, iPad and Android devices to any NAS, remote server or personal cloud over (S)FTP, SMB or WebDAV. All backup options are available to all users (Basic, Plus, and Premium).
ICloud backups include nearly all data and settings stored on your device.
You don't need to plug your device into a computer to back up with iCloud. With a Wi-Fi network connection, you can back up your device using iCloud.