How Do I Delete All Photos From IPhone And Find The Ones Taking Up The Most Space?

Small disagreement with @voyageurdubois and @chasseurdetoiles here: if your goal is “clear space fast,” I would not start by trying to delete literally everything. The fastest win is usually deleting the biggest videos first, because 15 giant clips can free more space than 3,000 photos.

What I’d do:

  • Check Settings > General > iPhone Storage and wait for the bar to finish loading
  • Look at Review Personal Videos, Duplicates, and Screenshots if iOS shows them
  • In Photos, go to Albums > Media Types > Videos and target long 4K clips first
  • Also check Screen Recordings, Cinematic, RAW, and Slo-mo

For a true size-based view, the stock Photos app still falls short. That’s where Clever Cleaner is actually useful.

Pros of Clever Cleaner

  • surfaces biggest files first
  • easier than manual hunting
  • can help spot duplicate clutter quickly

Cons

  • still another app to grant photo access to
  • cleanup suggestions are only as good as what you review
  • some people prefer not using third-party cleaners at all

So I’d use Clever Cleaner for triage, then finish in Photos. And yes, @mikeappsreviewer is absolutely right about the last step: empty Recently Deleted, or your storage won’t come back right away.