Step 1: see what is actually using the space

Open Settings → General → iPhone Storage. After a moment the bar at the top breaks storage into categories such as Apps, Photos, Messages and System, and a list of apps sorted by size appears below. Start with the biggest item rather than guessing.

Under the bar, iOS also lists recommendations, such as Offload Unused Apps or reviewing large attachments. Tap Show All to read each one before you enable it.

Step 2: delete in this order

WhatWhere to lookWhy it helpsCheck first
Large videosPhotos → Collections → Media Types → VideosA few long clips can outweigh thousands of photosAnything you cannot re-record
ScreenshotsPhotos → Collections → Media Types → ScreenshotsThousands of small files add upTickets, codes you still need
Duplicates and burst shotsPhotos → Collections → Utilities → Duplicates, or GoSwipe DuplicatesFive near-identical shots rarely need to be keptKeep the best frame
Recently DeletedPhotos → Collections → Utilities → Recently DeletedDeleted items still use space for up to 30 daysLast chance to recover
Messages attachmentsSettings → General → iPhone Storage → Messages → Review Large AttachmentsOld videos and photos sent in chats pile upDeleting here cannot be undone
Unused appsSettings → General → iPhone Storage, tap an appOffload keeps documents and dataDelete only removes data too
DownloadsFiles → Downloads, and Safari downloadsForgotten PDFs and installersAnything not backed up

If you use iCloud Photos, deleting a photo on the iPhone deletes it everywhere. Back up first and keep what you cannot replace. iCloud storage works differently from the phone's own storage.

Step 3: clear photos and videos faster

Photos is often the largest category and the easiest to shrink. These guides cover each part in detail:

GoSwipe helps with each of them: Videos mode plays clips with sound, Albums mode includes Screenshots, Duplicates is free, and Tidy Shelf turns look-alike cleanup into a 90-second game. Swipes are queued in the Bin and you confirm before iOS deletes anything.

Free to start

Free up gigabytes without guessing.

Start with videos and screenshots, review the Bin, and confirm through iOS.

Get GoSwipe on the App Store

What not to delete

  • System data. You cannot delete it manually, and it shrinks on its own when iOS needs room.
  • Backups you have not tested. Keep one copy of important photos before deleting the original.
  • Apps whose data is not in iCloud. Offload keeps data; Delete removes it.

Frequently asked questions

Why is my iPhone storage full when I have few photos?

Videos, Messages attachments, apps and their data, and System data can use more than photos. Open Settings → General → iPhone Storage to see the real breakdown.

Does deleting photos free up space right away?

Not completely. Deleted photos stay in Recently Deleted for up to 30 days and still use space until you delete them there.

Will freeing up phone storage also free iCloud storage?

They are separate meters, but with iCloud Photos on, deleting a photo or video removes it from iCloud as well once it leaves Recently Deleted.

Is it safe to offload apps?

Offloading removes the app but keeps its documents and data, so you can reinstall later. Deleting an app removes its data too.

What is the fastest single thing to delete?

Usually a few long videos. Check them first with the steps in our guide to finding large videos.

Sources and further reading

General information, not a guarantee. Menu names can differ slightly between iOS versions.