How to Fix "iPhone Storage Is Almost Full"

Running out of storage on iPhone? Here's a step-by-step guide to finding what is taking up space and freeing up gigabytes without deleting what matters.

In this guide (5 steps):

1.Check What Is Using Your Storage
2.Enable iCloud Photos to Offload Photos
3.Delete Unused Apps
4.Clear Streaming App Caches
5.Review and Delete Large Messages

Check What Is Using Your Storage

~23s

Go to SettingsGeneral → iPhone Storage. Review the colored bar at the top showing storage by category. Scroll down to see individual apps ranked by size. The largest items are listed first. Take note of the top 3-5 space consumers.

Quick Tip

Give the iPhone Storage screen 30-60 seconds to fully calculate — it loads in stages and the final numbers are more accurate after it finishes loading.

Enable iCloud Photos to Offload Photos

~24s

Go to SettingsPhotos → "iCloud Photos" → toggle on. Then select "Optimize iPhone Storage." Your photos and videos are kept in iCloud, and compressed previews stay on your phone. This often frees 5-20+ GB immediately.

Warning

This requires available iCloud storage. The free tier is 5 GB — if your photos are large, you may need to upgrade to a paid iCloud plan ($0.99/month for 50 GB, $2.99/month for 200 GB).

Delete Unused Apps

~16s

In iPhone Storage, tap any large app you no longer use. Tap "Delete App." The app and all its data are removed. For apps you might use again, tap "Offload App" instead — this removes the app but keeps its data so you can reinstall without losing progress.

Clear Streaming App Caches

~18s

Netflix, Hulu, Spotify, and podcast apps store downloaded content on your phone. In each app's settings, find "Downloads" and delete content you have already watched or listened to. Spotify: SettingsStorageDelete Cache. Podcast app: delete individual downloaded episodes.

Quick Tip

Streaming apps can each use 1-5 GB for downloaded content. Review each one regularly.

Review and Delete Large Messages

~22s

In iPhone Storage, scroll to "Messages" and tap it. Look for "Review Large Attachments" — photos, videos, and GIFs shared in messages accumulate quickly. Scroll through and delete attachments you no longer need. This often frees 1-3 GB.

Quick Tip

You can also go to a specific Messages conversation, tap the person's name at the top → "i" → "Photos" to see and delete all media from that conversation.

You Did It!

You've completed: How to Fix "iPhone Storage Is Almost Full"

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The "iPhone Storage Is Almost Full" warning means your phone is running low on available storage space — typically less than 1 GB remaining. When iPhone storage is full or nearly full, apps may crash, the camera may refuse to take photos, and the phone can become slow.

The first step is always to see exactly what is using your storage. Go to Settings → General → iPhone Storage. This shows a bar graph of storage usage by category and a list of apps sorted by how much space they use. Photos and videos are almost always the biggest consumer of storage.

Photos and videos deserve special attention. A single 4K video can use 400 MB or more. If you have hundreds of videos from family events, they may be consuming tens of gigabytes. Uploading photos to iCloud Photos and enabling "Optimize iPhone Storage" is often the single most effective storage-saving step.

With Optimize iPhone Storage enabled, iCloud keeps original full-resolution photos in the cloud but stores only smaller, device-optimized versions on your phone. You see all your photos normally but they use dramatically less local storage. When you want to view or send a photo in full quality, it downloads automatically from iCloud.

Beyond photos, the other major storage consumers are usually apps (especially games and entertainment apps with large downloaded content), music downloaded for offline listening, and podcast episodes.

A common mistake: deleting apps to free up space, then reinstalling them — each reinstall can bring back all cached data. Instead, use iPhone Storage's built-in "Offload App" feature, which removes the app but keeps its documents and data, so reinstalling brings everything back cleanly.

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