Where to find your storage information on iPhone

Open Settings, then tap General, then iPhone Storage. You will see a bar at the top showing how much space you have used and how much remains. Below that is a list of every app on your phone, ranked by size, with the amount of data each one takes up displayed next to its name.

This view shows you the total storage your iPhone has (usually 64 GB, 128 GB, 256 GB, or 512 GB depending on your model), how much is currently in use, and how much is free. The apps listed include not just the app itself but also the data it stores — photos in the Photos app, messages in Messages, cached files, and so on.

If you want to see what is taking up space without opening Settings each time, you can also check storage in Settings > General > iPhone Storage and leave that screen open while you investigate which apps or files to remove.

Key Takeaways

  • Your total storage and what is using it appears in Settings > General > iPhone Storage, with apps listed largest first.
  • The storage number includes the app plus all its data — photos, messages, cached files — not just the app code itself.
  • When storage runs low, iOS will warn you and may prevent you from taking photos or installing updates until you free up space.
  • Deleting an app removes both the app and the data it stored, so check what you need before removing something like Messages or Photos.

Understanding what counts toward your storage

Storage on your iPhone includes everything: the operating system itself, every app, every photo and video, every message, every email, every document, and temporary files that apps create while running. When you look at the iPhone Storage screen, the number next to each app is the total size of that app plus everything it has stored.

For example, the Photos app might show 8 GB. That is not just the app — it is the app plus every photo and video you have taken or saved. Similarly, Messages might show 2 GB, which is the app plus every text, image, and video in your message threads. Mail shows the app plus every email you have downloaded.

System files and the iOS operating system itself take up space too, usually between 5 GB and 15 GB depending on your iPhone model and iOS version. This space is separate from what apps use and is not something you can remove.

How to see what is using the most space

The iPhone Storage screen lists apps from largest to smallest. The app at the top is using the most space. Tap any app name to see a breakdown of what is inside it — for some apps like Photos or Messages, you will see options to manage the data stored there.

If you tap the Photos app from the iPhone Storage screen, you will see how many photos and videos are stored, and you can delete them directly from that view. If you tap Messages, you will see the total size and can delete entire conversations or attachments. For other apps, tapping them may show you options to clear cache or stored data, or it may just open the app itself.

Start by looking at the top five apps on your list. These are almost always Photos, Messages, Mail, or large games or social media apps. Removing or reducing data in these apps will free up the most space with the least effort.

What to do when storage is almost full

When you have less than 1 GB free, your iPhone will show a warning that storage is full. At this point, iOS may prevent you from taking new photos, recording videos, or installing app updates. Some apps may also stop working properly because they cannot create temporary files.

The fastest way to free up space is to delete photos and videos. Open the Photos app, go to the Albums tab, tap Recently Deleted, and permanently delete photos from there — they take up space until you empty this folder. You can also delete entire albums or use the Edit button to select multiple photos at once.

If you have old emails, delete them from the Mail app. If you have long message threads with photos and videos, delete the oldest conversations. If you have games or apps you no longer use, delete them from the home screen by holding down the app icon and selecting Remove App, then choosing Delete App.

Using iCloud to move photos and documents off your iPhone

iCloud Photos is a way to store your photos and videos on Apple's servers instead of on your phone. If you turn it on, new photos are uploaded to iCloud automatically, and you can delete the originals from your iPhone to free up space. You still see all your photos in the Photos app — they are just stored remotely instead of locally.

To turn on iCloud Photos, go to Settings > [Your Name] > iCloud > Photos and toggle on iCloud Photos. Choose Optimize iPhone Storage to keep lower-quality versions on your phone and store full-quality versions in iCloud, or choose Download and Keep Originals to store full-quality versions on your phone as well.

Documents and files stored in apps like Notes, Reminders, or third-party cloud apps (Google Drive, Dropbox, OneDrive) are also stored in iCloud or on those services' servers, not on your iPhone itself. Checking those apps' storage in iPhone Storage shows only what is cached locally for offline access.

Why your iPhone says it is full when you have free space

Sometimes the iPhone Storage screen shows you have free space, but your phone still will not let you take photos or install updates. This usually means the free space is fragmented — broken into small chunks scattered across the storage, rather than one large block. iOS needs a continuous block of free space to perform certain tasks.

The fix is to restart your iPhone. Hold down the power button and volume button together, slide to power off, wait 10 seconds, then hold the power button again until you see the Apple logo. After the restart, iOS reorganizes storage and usually frees up a usable block of space.

If restarting does not help, delete more files or photos until you have at least 2 GB free. This gives iOS enough room to work with.

Checking storage on older iPhone models

The iPhone Storage screen has looked the same since iOS 11 (released in 2017), so the steps are identical whether you have an iPhone 6S or an iPhone 15. Go to Settings > General > iPhone Storage and you will see the same layout and information.

Older iPhones may have less total storage — iPhone 6S and 7 models often came with 32 GB or 64 GB, while newer models start at 128 GB. This means older phones fill up faster. The way you check and manage storage is the same, but you may need to delete files more often.

Frequently Asked Questions

Can I see storage broken down by category like photos, videos, and apps?

The iPhone Storage screen shows apps and their data, but not a category breakdown. To see how much space photos and videos use, open the Photos app and go to Settings > General > iPhone Storage, then tap the Photos app. For a full breakdown by type, you can use a third-party app from the App Store designed to analyze storage, though the built-in view is usually sufficient.

Does deleting an app delete all the data it stored?

Yes. When you delete an app, you also delete all the data it stored — photos in that app, messages, saved files, everything. The exception is data stored in iCloud or on a cloud service like Google Drive, which remains on those servers. If you are unsure, check iCloud or the app's settings to see where data is actually stored before deleting.

Why does my iPhone storage show more used space than the sum of all my apps?

iOS itself, system files, and temporary cache files account for the difference. The operating system typically uses 5 to 15 GB. Apps also create temporary files while running that are not always counted in their listed size. Restarting your iPhone clears most temporary files and may show a slightly lower used-space number.

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

Yes. The Recently Deleted folder holds photos for 30 days before they are permanently removed. Deleting them from there frees up space immediately and permanently removes them from your iPhone and iCloud. If you think you might need them later, move them back to your main photo library before the 30 days are up.

What happens if I run out of storage completely?

Your iPhone will not let you take photos, record videos, or install app updates. Some apps may crash or behave unpredictably. You will need to delete files or apps to free up space before normal functions work again. iOS will not delete your data automatically to make room.