iPhone Storage and iCloud Storage: How They Differ

iPhone storage is the set amount of space built into your phone. iCloud storage is separate space online, tied to your Apple Account, with 5 GB free and more on a paid iCloud+ plan. Apple treats them as two allowances, checked in two different places.

Because each one fills on its own, an iPhone can be full while iCloud has room, or the other way round. For a photo library, the two meet in iCloud Photos, which can keep your originals online and a smaller copy on the phone.

What iPhone Storage Is

iPhone storage, which Apple calls device storage, is the memory built into the phone. Apple says a device comes with a set amount of storage. The more it has, the more music, apps, photos and other content it can hold.

That amount is set when you buy the phone. It holds iOS, your apps, photos and videos, messages and downloads. Settings > General > iPhone Storage shows what uses it, and checking iPhone storage explains each category in the bar.

What iCloud Storage Is

iCloud storage is online space that belongs to your Apple Account rather than to one phone. It holds photos, files, notes and other data, and keeps them up to date on every device signed in with the same account.

Several features draw on the same allowance: iCloud Backup, iCloud Photos, iCloud Drive, Messages in iCloud and iCloud Mail. To see how it is split, open Settings, tap your name, then tap iCloud. Tap Storage or Manage Storage for the detail.

iCloud+ Plans and Prices

Beyond the free allowance, iCloud+ plans add more space. These are the monthly prices on Apple's iCloud+ pricing page, published on 16 September 2026:

UK prices include tax, while some US states add tax to the monthly payment. A plan adds space to iCloud only, and the phone keeps the capacity it was sold with. One allowance is bought once with the phone, the other month by month.

iPhone Storage vs iCloud Storage Side by Side

What is the difference between iPhone storage and iCloud storage?

The difference between iPhone storage and iCloud storage is where the space lives and who it belongs to. iPhone storage is inside one phone and set at purchase. iCloud storage sits online, belongs to your Apple Account, and grows with a paid plan.

The only overlap is a file kept in both places at once. iCloud Photos does that by design, and its settings decide how much of each allowance a photo library uses.

How iCloud Photos Uses Both

Does iCloud storage free up space on iPhone?

iCloud storage frees up space on iPhone for photos and videos when iCloud Photos and Optimise iPhone Storage are both on. Full-resolution originals then stay in iCloud, and the phone keeps space-saving copies.

Apple turns Optimise Storage on by default with iCloud Photos. Without it, the originals stay on the phone as well as in iCloud, so one library uses both allowances in full. Apple's photo storage guide gives the path:

1. Open Settings, tap your name, tap iCloud, then tap Photos.
2. Turn on Sync this iPhone.
3. In iOS 27 or later, tap iPhone Storage.
4. Make sure Optimise iPhone Storage is on.

The Optimise iPhone Storage setting covers the Photos library only. Apple adds that as long as iCloud has enough space, you can store as many photos and videos as you want. That condition is where a full iCloud starts to matter.

What Happens When Each One Is Full

What happens when iCloud storage is full?

When iCloud storage is full, your iPhone stops backing up to iCloud and new photos and videos stop uploading to iCloud Photos. iCloud Drive and other iCloud apps stop staying up to date, and iCloud Mail can no longer send or receive email.

In the Photos app, a message says your iCloud storage is full. Apple explains that syncing has paused because the storage limit has been exceeded. Photos taken after that point stay on the phone only.

One rule changes as well. According to Apple's iCloud storage guide, photos and videos you delete while over the limit are removed immediately. They skip Recently Deleted, so they cannot be recovered from there.

A full iPhone behaves differently. Apple says you might get an alert, and new content has nowhere to go until space is freed on the phone. A larger iCloud plan does not change that unless Optimise iPhone Storage is moving photos off.

The fixes differ too. An iPhone that stays full despite iCloud needs space cleared on the phone. A full iCloud account needs space cleared online, or a larger plan.

Freeing Space in iPhone Storage and iCloud Storage

Deleting photos you no longer need lowers both allowances when iCloud Photos is on. Apple's guide to deleting photos says a photo deleted on one device is deleted on every device signed in with the same Apple Account.

Within the iCloud limit, the photo then stays in Recently Deleted for 30 days and can still be recovered. Recently deleted photos on iPhone covers how the album works. For everything else that fills a phone, iPhone storage full sets out the fixes by category.

Going through a large camera roll photo by photo is where most of this work sits. Photo cleaner apps such as Swipe Quick show one photo at a time on the device: swipe left to delete, right to keep. Nothing is deleted without confirmation, and deleted photos go to Recently Deleted like any other deletion.

Frequently asked questions

Do photos in Recently Deleted count towards iCloud storage?

Photos in Recently Deleted do not count towards iCloud storage. Apple states this in its guide to managing iCloud storage, next to its advice on deleting photos and videos to make space.

Does iCloud Backup include photos in iCloud Photos?

iCloud Backup does not include photos and videos in iCloud Photos, because they are already stored in iCloud. Apple lists Messages in iCloud and iCloud Mail as left out of the backup for the same reason.