Photos storage includes local originals, edited versions, videos, Recently Deleted and sync caches. Confirm whether iCloud Photos is active before deleting anything. Open Settings, General, iPhone Storage and the Photos settings to see the iCloud and optimize options. Sort by size in Photos and review the largest videos first.
Differential
Likely causes of “iPhone Photos uses most of the storage”, and how to tell them apart
- 1
Full-resolution originals are stored on the iPhone
What separates it Photos uses many gigabytes and Optimize iPhone Storage is not enabled or iCloud Photos is off.
How to confirm Open Settings, General, iPhone Storage and the Photos settings to see the iCloud and optimize options.
- 2
Large videos and Live Photos take the space
What separates it A few long videos use most of the storage, and the largest items are videos.
How to confirm Sort by size in Photos and review the largest videos first.
- 3
Recently Deleted still holds items
What separates it Space does not return after deleting photos because they stay in Recently Deleted for a period.
How to confirm Review Recently Deleted and empty it only after confirming.
- 4
Edited versions and duplicates add up
What separates it Many edited copies, screenshots and duplicated images are stored, and the Photos storage figure is larger than the library looks.
How to confirm Look for the Duplicates album and for exported videos that are no longer needed.
Before you touch a setting
Record this first — changing settings destroys the evidence
- The Photos storage figure, and whether iCloud Photos and Optimize Storage are on.
- The largest videos and the size of Recently Deleted.
- Whether the photos are backed up somewhere else.
Try in this order
0 of 4 completedCapture the exact symptom
ReversibleOpen iPhone Storage and Photos settings; note iCloud status, Optimize Storage and large video categories.
Run the smallest isolation test
ReversibleBack up irreplaceable media, empty Recently Deleted only after review, and enable optimization if cloud capacity and upload are sufficient.
Correct only the proven cause
ReversibleRemove known duplicates or exported videos rather than clearing the entire library.
Verify before changing anything else
ReversibleConfirm iCloud upload completes and free space increases after background processing.
Stop boundary
When this stops being a self-service repair
- !Back up irreplaceable photos before deleting, and do not clear the entire library to gain space.
Evidence ledger
Sources behind this answer
Exact questions
Common questions
Will turning on iCloud Photos free space on my iPhone?+
With Optimize iPhone Storage on, full-resolution originals move to iCloud and smaller versions stay on the phone. Wait for the upload to finish before you expect the space back.
Does deleting a photo on the iPhone delete it from iCloud?+
With iCloud Photos on, yes. A deletion syncs to every device, so back up anything you want to keep before deleting.
Why do Photos take so much storage?+
Photos and videos, especially 4K, are large.
How can I free space?+
Use iCloud Photos with Optimize Storage or delete unneeded items.
Does Recently Deleted count?+
Yes, until it is emptied.