How to free up iPhone storage: 12 ways to get space back

Quick answer: Open Settings → General → iPhone Storage to see what's using space and follow Apple's recommendations. The biggest wins are usually: turn on Optimise iPhone Storage for iCloud Photos, offload unused apps, delete large videos and downloaded media (Netflix, Spotify, podcasts), clear WhatsApp and Messages attachments, and empty "Recently Deleted" in Photos. Restarting and updating iOS often shrinks System Data too.

Key takeaways

• Photos and videos are usually the biggest space users — especially 4K video.
• Offloading an app removes it but keeps its data; reinstall any time.
• Recently Deleted photos still use space for 30 days until you empty it.
• WhatsApp media can quietly take 10–50 GB. Clear it from inside WhatsApp.
• Aim to keep at least 10–15% free so iOS updates and the camera work smoothly.

"Storage almost full" pops up at the worst time — just before you take a photo or install an update. Here are 12 ways to get space back, from 30-second fixes to deeper clean-ups, without losing what matters.

#Step 1: See what's using your storage

1. Open Settings → General → iPhone Storage.
2. Wait for the coloured bar to load. It shows Apps, Photos, Media, Messages, iOS and System Data.
3. Below it, iOS shows recommendations (like "Offload Unused Apps" or "Review Large Attachments").
4. Below that is every app, sorted by size.

#Quick fixes (5 minutes)

1. Empty "Recently Deleted" in Photos

Deleted photos stay for 30 days.

• Photos → Albums → scroll to Recently Deleted → unlock with Face ID → Select → Delete All.

2. Offload unused apps

Offloading removes the app but keeps your documents and data.

• One app: Settings → General → iPhone Storage → tap the app → Offload App.
• Automatically: Settings → Apps → App Store → turn on Offload Unused Apps.

3. Delete downloaded media

Streaming apps keep downloaded episodes and songs:

• Netflix, Prime Video, YouTube: open Downloads and delete.
• Spotify / Apple Music: remove downloaded playlists you don't need offline.
• Podcasts: Settings → Apps → Podcasts → set downloaded episodes to be removed after playing.

4. Restart your iPhone

A restart clears temporary files and can shrink System Data right away.

#Photos and videos

5. Turn on Optimise iPhone Storage

If you use iCloud Photos:

• Settings → [your name] → iCloud → Photos → choose Optimise iPhone Storage.
• Full-resolution photos stay in iCloud; your iPhone keeps smaller versions and downloads the full one when you open it.

Tip: The free iCloud plan is only 5 GB. If your photos are bigger, you'll need iCloud+ (it starts small and is cheap per month) or another backup like Google Photos.

6. Find and delete big videos

• Photos → Albums → Media Types → Videos — long and 4K videos can be hundreds of MB each.
• Delete ones you don't need, or move them to a computer or external drive.

7. Use the Duplicates album

• Photos → Albums → Utilities → Duplicates → Merge to combine copies and keep the best one.

8. Lower the video recording settings

• Settings → Camera → Record Video. 4K at 60 fps uses about 400 MB per minute; 1080p at 30 fps uses roughly 60 MB per minute.
• Settings → Camera → Formats → choose High Efficiency (HEIF/HEVC) to save space versus "Most Compatible".

#Messages and WhatsApp

9. Clear Messages attachments

• Settings → General → iPhone Storage → Messages → Review Large Attachments, Photos, Videos — swipe left to delete.
• Set old messages to delete automatically: Settings → Apps → Messages → Keep Messages → 1 Year (or 30 days).

10. Clean up WhatsApp

WhatsApp storage doesn't show in the Photos app, so it's easy to miss.

1. Open WhatsApp → Settings → Storage and Data → Manage Storage.
2. Review Larger than 5 MB and Forwarded many times — delete in bulk.
3. Open each big chat and delete media you don't need.
4. Turn off Save to Photos (Settings → Chats) so every forward isn't saved twice.
5. Set Media auto-download to "Wi-Fi" or "Never" for videos.

#Deeper clean-ups

11. Clear Safari and app caches

• Safari: Settings → Apps → Safari → Clear History and Website Data (this signs you out of websites).
• Apps like Instagram, TikTok, Telegram, Chrome and Google Maps can store large caches. Some have a "Clear cache" option in settings; otherwise delete and reinstall the app.
• Telegram: Settings → Data and Storage → Storage Usage → Clear cache and set Keep media to a shorter time.

12. Shrink "System Data" (Other)

System Data includes caches, logs, Siri voices and temporary files. If it's very large (20 GB+):

1. Restart the iPhone.
2. Update iOS (Settings → General → Software Update).
3. Clear Safari data and big app caches (see #11).
4. Delete old Siri voices or offline translation languages you don't use.
5. As a last resort: back up, Erase All Content and Settings, and restore — this usually shrinks System Data a lot.

#How much space should you keep free?

Keep at least 10–15% free. iOS updates often need 5–8 GB of free space to install. When storage is nearly full, the camera, apps and even typing can slow down.

#When it's time for more storage

If you've cleaned up and are still always full:

• iCloud+ or Google One for photos and backups.
• A USB-C flash drive (iPhone 15 and later) or Lightning drive to move videos off.
• Next time, choose a phone with 256 GB or more if you shoot lots of video.

#Frequently asked questions

Why is my iPhone storage full when I've deleted photos?

Deleted photos stay in "Recently Deleted" for 30 days. Empty that album to free the space.

What does "Offload App" do?

It removes the app but keeps its documents and data. Reinstalling restores everything.

How do I reduce System Data on iPhone?

Restart, update iOS, clear Safari and app caches, and delete unused offline content. Erasing and restoring from a backup shrinks it the most.

Does deleting WhatsApp chats free up space?

Yes, especially chats with lots of media. Use WhatsApp's Manage Storage tool for the biggest files.

Will Optimise iPhone Storage delete my photos?

No. Full-resolution originals stay in iCloud; the iPhone keeps smaller versions.

How much storage does iOS need?

iOS itself takes around 10–15 GB, and updates need several GB of free space to install.

Is it safe to clear Safari history?

Yes, but it signs you out of websites and removes saved site data.

#Sources

• Apple Support — How to check the storage on your iPhone and iPad
• Apple Support — Manage your iCloud storage
• Apple Support — Use iCloud Photos