iCloud Photos vs iCloud Backup: what’s the difference?
One mirrors your library, the other keeps a snapshot. Neither is a spare copy of the other.
In short
iCloud Photos syncs your photo library across your devices: what you add or delete on one appears or disappears on all of them. iCloud Backup is a periodic copy of the data on your iPhone that doesn’t already sync to iCloud. When iCloud Photos is on, your photos are not part of iCloud Backup — so a photo you delete is not waiting in a backup.
Key takeaways
- iCloud Photos is sync: deletions reach every device.
- With iCloud Photos on, photos are left out of iCloud Backup.
- Both are end-to-end encrypted only with Advanced Data Protection.
iCloud Photos: one library, everywhere
With iCloud Photos on, every photo and video you take is uploaded in its original format at full resolution, and a change made on one device appears on the others. That includes deletions: a photo deleted on your iPhone is deleted everywhere you use iCloud Photos, and can be recovered from Recently Deleted for 30 days.
You turn it on in Settings › [your name] › iCloud › Photos, with Sync this iPhone. The library counts against your iCloud storage.
iCloud Backup: a snapshot of what doesn’t sync
iCloud Backup copies the information on your iPhone that isn’t already kept in iCloud: device settings, Home Screen layout, app data, messages if Messages in iCloud is off — and photos and videos only if iCloud Photos is off. It runs daily when the iPhone is locked, charging and on Wi-Fi. You can start one yourself in Settings › [your name] › iCloud › iCloud Backup › Back Up Now.
If you turn off iCloud Backup for a device, its existing backups are kept for 180 days, then deleted.
Side by side
- What it holds — iCloud Photos: your photo library. iCloud Backup: settings, app data and anything else that doesn’t sync.
- Your photos — in iCloud Photos when it’s on; in iCloud Backup only when iCloud Photos is off.
- Deleting — a deletion in iCloud Photos reaches every device after 30 days in Recently Deleted; an iCloud Backup is a point-in-time copy used to set up or restore an iPhone.
- Storage — both count against the same iCloud storage plan.
Why “I use both” can still mean a single copy
Apple says it plainly: photos in iCloud Photos aren’t duplicated in your iCloud Backup, so keep backup copies of your library. If you delete a photo by mistake and miss the 30-day window, iCloud Backup won’t have it. A real second copy means importing your library to a computer or a drive from time to time.
How each is encrypted
Apple encrypts iCloud backups in every case, and iCloud Photos in transit and on its servers. Under standard data protection, Apple holds the keys to both. With Advanced Data Protection turned on, iCloud Backup and Photos both become end-to-end encrypted, with keys only on your trusted devices.
Where app data goes
Data from the apps you install, including vault apps, is part of iCloud Backup unless the app keeps it in iCloud Drive itself. Whatever the route, what matters is who holds the key. Latent backs up each vault to your own iCloud, encrypted on the iPhone before it leaves, so neither Apple nor Latent can read it — with or without Advanced Data Protection.