When your iPhone says “Storage Almost Full”, the first instinct is to delete things in a panic — and that is exactly how photos and chats get lost by mistake. The good news: most of the space is usually taken by a few predictable things, and you can free it safely if you work in the right order.
This guide walks through that order: first see what is actually using the space, then clear the big, safe wins, and only at the end touch anything personal like photos or messages.
Step 1: See what is using the space
Open Settings → General → iPhone Storage. Wait a few seconds for the coloured bar to fill in — it shows exactly how much space goes to Photos, Apps, Messages and System Data.
Below the bar, the iPhone lists every app sorted by size. This list is your map for everything that follows: start at the top, because the biggest items give the biggest wins.
Step 2: Photos and videos (usually the biggest chunk)
Photos and videos are almost always the number one space user. The safest way to free that space is to back them up first, then remove them from the phone — not the other way around.
Turn on iCloud Photos (Settings → your name → iCloud → Photos) and choose “Optimise iPhone Storage”. The full-resolution versions stay in iCloud, and the phone keeps smaller copies. You can also copy photos to a computer or an external drive before deleting them.
- Check the Recently Deleted album in Photos — deleted photos still take space for 30 days until you empty it.
- Screen recordings, 4K videos and Live Photos are much bigger than normal pictures. Sort by size and review those first.
Step 3: Apps you do not use
On the same iPhone Storage screen, tap any app you have not opened in months. You get two options: “Offload App” (removes the app but keeps its documents and settings) or “Delete App” (removes everything).
Offload is the safe choice for apps you might want again — when you reinstall, your data is still there. You can even let the iPhone do this automatically: Settings → App Store → Offload Unused Apps.
Step 4: Messages and chat apps
Years of photos and videos received in Messages, WhatsApp and similar apps quietly eat gigabytes. In Messages, go to Settings → Messages → Keep Messages and switch from “Forever” to “1 Year” or “30 Days”.
In WhatsApp, open Settings → Storage and Data → Manage Storage — it shows the largest files first, so you can delete a handful of big videos instead of scrolling through everything.
Step 5: Downloads and offline files
Check apps that download content for offline use: music, podcasts, Netflix, maps and file apps. Delete downloaded episodes and playlists you have already listened to or watched — they can always be downloaded again.
Also look in the Files app under “Downloads” — old PDFs and attachments pile up there.
Tips and tricks that keep the space free
- Turn on “Optimise iPhone Storage” for photos and let “Offload Unused Apps” run automatically — with those two switches on, the phone manages most of the space by itself.
- Empty the “Recently Deleted” album right after a big clean-up — that single tap often gives back several gigabytes instantly.
- Shoot video in 1080p instead of 4K when you do not need the extra quality (Settings → Camera → Record Video) — the files become roughly four times smaller.
- Send photos to friends through a link (iCloud link) or a messaging app's document mode instead of keeping every photo sent to you in ten chats.
- Check your storage once a month, not once a year — Settings → General → iPhone Storage takes ten seconds to read, and small clean-ups are much easier than one giant panic clean-up.
- Before a big iOS update, free at least 5–10 GB first — most “update failed” messages are simply a full phone.
What NOT to delete
- Do not delete photos before you have confirmed the backup actually worked — open iCloud or your computer and check they are really there.
- Do not delete apps whose data only lives inside the app (some banking, health or two-factor apps) without checking first.
- Do not trust “cleaner” apps that promise to free space magically — the built-in tools above do the job safely and for free.
If you follow the order above, most people free several gigabytes in under half an hour — without losing anything important. Aim to keep at least 5–10 GB free so updates and the camera keep working smoothly.
Not sure what is safe to delete on your phone? Use the Digital Checkup page and we will look at it together.