Check your storage in Settings

Your iPhone stores photos, apps, messages, and files all in one place, and that space fills up. To see how much room you have left, open Settings, then tap General, then iPhone Storage. At the top you'll see a colored bar showing how much space is used and how much is free. Below that, your phone lists every app and how much space each one takes up, from largest to smallest.

This screen is your starting point for understanding what's eating your storage. If the bar is mostly full (the free space is very small), your phone will slow down and you won't be able to install updates. If you see less than 1 GB free, you should delete something soon.

Key Takeaways

  • Open Settings, tap General, then iPhone Storage to see exactly how much space you have left and what's using it.
  • Photos and videos take up the most space on most iPhones, and you can delete old ones or move them to iCloud.
  • Apps you haven't used in months often take up more space than you think — deleting them frees up room instantly.
  • iCloud Photos and iCloud+ subscriptions let you store photos on Apple's servers instead of on your phone, freeing up local space.

Delete photos and videos you don't need

Photos and videos are usually the biggest space hogs on an iPhone. Open the Photos app, tap Albums at the bottom, then scroll down and tap Recently Deleted. Any photo or video you deleted in the last 30 days sits here. If you see videos you shot by accident or blurry photos, tap Select, tap each one, then tap Delete at the bottom right. These are gone for good and won't come back.

For photos you want to keep but don't need on your phone, use iCloud Photos. Go to Settings, tap your name at the top, tap iCloud, then tap Photos, then turn on iCloud Photos. Your phone will upload all your photos to Apple's servers. On your phone, you'll see only recent photos and videos; older ones stay in iCloud but don't take up space on your device. You need an iCloud+ subscription (50 GB, 200 GB, or 2 TB per month) for this to work.

Remove apps you're not using

Apps you installed once and never opened again still take up space. Go back to Settings, General, iPhone Storage. Look for apps you recognize but haven't used in months. Tap the app name, then tap Offload App (this removes the app but keeps your data) or Delete App (this removes everything). If you're not sure whether you'll need it again, choose Offload first — you can reinstall it later from the App Store without losing your settings.

Games are often the worst offenders. A single game can take 500 MB to 2 GB. If you haven't played it in three months, deleting it will free up real space. You can always download it again if you change your mind.

Clear out old messages and attachments

Messages, especially ones with photos and videos, add up fast. Open the Messages app, swipe left on a conversation, tap the trash icon, then tap Delete. For conversations with lots of photos, this can free up hundreds of MB. You can also set messages to delete automatically: go to Settings, tap Messages, scroll down to Keep Messages, and choose 30 days or 1 year instead of Forever.

Your phone also stores every attachment you've ever received in Messages — photos, documents, files. These pile up even if you delete the message. To clear them out, go to Settings, tap General, tap iPhone Storage, scroll down and tap Messages, then tap Review Large Attachments. Tap Edit, select the files you don't need, and tap Delete.

Use iCloud to store documents and files

If you use iCloud Drive, Google Drive, Dropbox, or OneDrive, you can store documents and files on those services instead of on your phone. Open the app for whichever service you use, upload the file, then delete it from your phone's local storage. The file stays accessible in the cloud app whenever you need it.

For work documents, PDFs, and spreadsheets, this is the fastest way to free up space without losing access. Most of these services offer free storage (usually 5 GB to 15 GB), and paid plans if you need more.

Empty the cache from Safari and apps

Safari stores temporary files and browsing data that take up space over time. Open Settings, scroll down and tap Safari, scroll down to Clear History and Website Data, tap it, then tap Clear. Choose how far back you want to clear (the default is all history). This removes cached images, cookies, and browsing history but won't sign you out of websites.

Some apps also store cache files. You can't clear individual app caches on iPhone the way you can on Android, but offloading an app (as described above) removes its cache. Reinstalling it later will start fresh.

Understand what takes up the most space

On most iPhones, photos and videos take up 30 to 50 percent of storage. Apps come second, usually 20 to 40 percent. Messages and attachments, cached data, and system files make up the rest. If your phone is full, start by deleting old photos and unused apps — you'll see the biggest improvement fastest.

If you're down to your last few hundred MB and your phone is running slowly, you may need to delete more aggressively. Remove apps you haven't used in weeks, not just months. Delete videos you've already watched. Turn on iCloud Photos so older photos move to the cloud. These steps together usually free up several GB.

Frequently Asked Questions

What happens if my iPhone storage is completely full?

Your phone will slow down, apps may crash, and you won't be able to install updates or take new photos. iOS needs some free space to run smoothly. If you hit zero free space, delete something immediately — start with old videos or unused apps.

Does turning on iCloud Photos delete my photos from my phone?

Not right away. When you turn on iCloud Photos, your phone uploads everything to Apple's servers. After a few hours or days, your phone keeps only recent photos locally and stores older ones in iCloud only. You can still see all your photos in the Photos app, but they don't take up space on your device.

Can I get my storage back after I delete an app?

Yes. If you deleted an app by accident or changed your mind, open the App Store, search for the app by name, and tap the cloud icon to reinstall it. Your settings and data come back if you offloaded it; if you deleted it completely, you'll start fresh but the app itself is free to download again.

Is it safe to delete files from Recently Deleted in Photos?

Yes. Anything in Recently Deleted is already marked for removal — you're just speeding up the process. Once you tap Delete, it's gone permanently and can't be recovered. If you're not sure, wait the 30 days and let your phone delete it automatically.

Do I need to pay for iCloud+ to use iCloud Photos?

Yes. iCloud Photos requires an iCloud+ subscription (50 GB for $0.99/month, 200 GB for $2.99/month, or 2 TB for $9.99/month). The free 5 GB iCloud plan doesn't include iCloud Photos. If you don't want to pay, delete old photos manually or use a free cloud service like Google Photos instead.