Short answer: on a full Samsung phone, delete the heaviest low-risk clutter first. In practice that usually means screenshots, Downloads, large videos, offline app media, and repeated files before you start touching photos, contacts, or documents that need slower review.
Samsung devices often feel full because several ordinary Android clutter surfaces pile up together. The right cleanup order is the one that removes storage weight quickly without forcing you into emotional or irreversible choices under pressure.
What to delete first
Screenshots, memes, and one-time reference images.
Downloads, exported files, and forgotten attachments.
Large videos, screen recordings, and repeated media.
Offline app media that can be reviewed later in a calmer pass.
What to leave for later
Important camera photos that need actual review.
Apps you still use unless the offload is clearly worth it.
Contacts, notes, and files that are harder to reconstruct.
Why Samsung phones often feel full suddenly
The problem is often not one category. It is storage pressure spread across gallery clutter, downloads, app cache, and saved media. That is why a grouped Android cleanup route usually works better than trying random deletions from several screens.
If you want the broader route next, open free up Android space. If you want a browser-first estimate, use the storage helper.
On a full Samsung phone, the best first deletion is usually the biggest low-risk Android clutter category, not the most personal file you can reach fastest.