"iCloud Storage Full" is a different problem from "iPhone Storage Full", and almost every fix for one does nothing for the other. This page is about the iCloud side.
Find out what is actually using it
Settings → your name → iCloud → Manage Account Storage. You get a list, largest first. It is nearly always some order of these:
| What | Typically | Safe to clear? |
|---|---|---|
| Photos | The biggest slice by far | Carefully — see below |
| Backups | One per device, including old ones | Yes, for devices you no longer have |
| Messages | Years of attachments | Yes, with a retention limit |
| Attachments in an iCloud mail account | Yes | |
| App data | Anything from documents to game saves | Usually |
Work down that list in order. The first three below take a couple of minutes and often solve it outright.
The quick wins
Empty Recently Deleted
Photos → Albums → Recently Deleted → Select → Delete All. Deleted photos count against your iCloud storage for the full 30 days they sit there. If you have just done a cleanup, this alone can free a lot.
Delete backups of devices you no longer own
Manage Account Storage → Backups. An iPad you sold in 2023 may still have a multi-gigabyte backup in your account. Delete it — it backs up nothing you still have.
Trim what your current phone backs up
Manage Account Storage → Backups → your iPhone. Turn off backup for apps that hold big caches and no irreplaceable data. Streaming apps, podcast apps and games are the usual candidates. Never turn it off for Messages or anything holding data that exists nowhere else.
Cap your Messages history
Settings → Apps → Messages → Keep Messages → 1 Year. Every photo and video anyone has sent you is in there, and it is backed up.
Then the photos themselves
If Photos is still the biggest slice — and it usually is — the space genuinely is your library, and the only way out is to make the library smaller.
The efficient order:
- Videos. One 4K clip can outweigh a thousand photos. Albums → Media Types → Videos, look at the longest, and be honest about which will ever be watched again.
- Exact duplicates. Albums → Utilities → Duplicates, merge them. Free and safe.
- Screenshots. Albums → Media Types → Screenshots. Almost all of them were useful for one day, years ago.
- Near-identical shots. The biggest category, and the one nothing built-in will help you with. See how to delete similar photos on iPhone.
Leaving iCloud Photos entirely
Perfectly reasonable, if what you object to is the monthly bill. Do it in this order, and not in any other:
Get a full copy off the phone first
Connect the iPhone to a Mac or PC and import every photo and video, or use Photos on the Mac with Download Originals to this Mac enabled and let it finish completely. On Windows, the Apple Devices app or File Explorer import both work.
Verify the copy
Count the files. Open a handful from the start, middle and end of the library. Check that videos play. Do not skip this — it is the entire safety net.
Set the phone to keep originals
Settings → Photos → Download and Keep Originals, and wait for it to finish. If you were on Optimise iPhone Storage, the phone only has small versions, and turning sync off without downloading first is how people lose quality permanently.
Only now turn iCloud Photos off
Settings → Photos → iCloud Photos → off. iOS will ask what to do with the library; choose to keep the originals on the device.
The thing worth internalising
Optimise iPhone Storage does not help here, and this is the most common wasted afternoon in phone storage. It shifts space from the device to iCloud — which is exactly the wrong direction when iCloud is the thing that is full. There is more on that in what Optimise iPhone Storage actually does.
For a full iCloud account there are only three real levers: delete backups you do not need, delete photos you do not want, or pay for a larger plan. Everything else is rearranging.
Frequently asked
- Does deleting photos from my iPhone delete them from iCloud?
- Yes, if iCloud Photos is on. It is one library, synced — a deletion on any device removes the photo everywhere, after 30 days in Recently Deleted. That is the point of the service, and it is why there is no way to delete from the phone but keep it in iCloud while syncing stays on.
- Why is iCloud full when my iPhone has space?
- They are separate stores. iCloud holds your full-resolution originals plus device backups, app data and mail; the phone holds whatever iOS chooses to keep locally. A 128 GB phone that is half empty can sit alongside a 50 GB iCloud plan that is completely full.
- What is safe to delete from iCloud?
- Backups of devices you no longer own, app data for apps you have stopped using, old Mail attachments and anything in Recently Deleted. All of that is safe. Photos are the one category to treat carefully, because if iCloud Photos is your only copy, deleting there deletes your only copy.
- Can I keep photos in iCloud but not on my phone?
- Yes, that is exactly what Optimise iPhone Storage does. It saves space on the device and none in iCloud, so it is the right setting for a full phone and no help at all for a full iCloud account.