Where to find your iPhone's storage information

Your iPhone stores this information in the Settings app, which is built into every iPhone. Open Settings, then tap General, then tap iPhone Storage. The screen that appears shows your total capacity at the top — for example, "64 GB" or "256 GB" — and below that, a colored bar that breaks down how much space each type of content is using.

This is the most direct way to see what you have. The numbers update in real time, so if you've just deleted photos or installed an app, you may need to wait a few seconds for the screen to refresh before the change appears.

Key Takeaways

  • Your total storage capacity appears at the top of the iPhone Storage screen in Settings > General > iPhone Storage.
  • The colored bar below shows how much space is taken up by apps, photos, system files, and other content.
  • Available space is the amount you can still use; used space is what's currently on your phone.
  • If you have less than 1 GB free, your iPhone may slow down or refuse to install updates.
  • Photos and videos typically use the most storage, followed by apps and system files.

Understanding the colored storage bar

The bar is divided into sections, each representing a different type of content. Apps appear as one color, Photos and Videos as another, System (the operating system and built-in files) as another, and so on. The exact colors vary depending on your iPhone model and iOS version, but the order is always the same.

Tap any section of the bar to see more detail about that category. For example, tapping the Apps section shows you a list of every app on your phone, ranked by size. This is useful if you're trying to free up space — you can see when ready which apps are taking the most room.

What "available" versus "used" means

Your total capacity is fixed — it's determined when the phone is manufactured. If you have a 128 GB iPhone, that's always 128 GB. Used space is what's currently occupied by apps, photos, documents, and system files. Available space is what's left over that you can still fill.

For example, if you have a 128 GB phone and 100 GB is used, you have 28 GB available. As you add photos, read apps, or save files, the used space grows and available space shrinks. The iPhone Storage screen shows both numbers clearly.

Why the numbers don't add up perfectly

If you add up all the categories shown in the storage bar, the total may be slightly less than your used space. This happens because the iPhone counts some system files and temporary data separately, and because different apps store data in different locations. The discrepancy is usually small — a few hundred megabytes — and is normal.

You may also notice that your total capacity is slightly less than advertised. A 128 GB iPhone might show 127 GB or 126 GB as the actual capacity. This is because manufacturers measure storage differently than the operating system does, and because the system itself takes up a small amount of space before you add anything.

How much storage you actually need

If you mostly use your iPhone for calls, messages, email, and browsing, 64 GB is usually enough. If you take a lot of photos and videos, or read movies and music for offline use, 128 GB or 256 GB is safer. If you use your phone for work — storing large files, editing video, or running demanding apps — 256 GB or 512 GB may be necessary.

A practical rule: keep at least 1 GB free at all times. When your available space drops below 1 GB, your iPhone slows down noticeably, and it may refuse to install system updates or back up your data. If you regularly see less than 5 GB available, consider deleting old photos, removing unused apps, or upgrading to a larger model the next time you replace your phone.

Freeing up space when you're running low

The iPhone Storage screen itself suggests what to delete. Scroll down past the colored bar and you'll see a list titled "Recommendations." This usually includes large old videos, duplicate photos, or apps you haven't used in months. Tapping any item shows you how much space it would free up if you deleted it.

Photos and videos are almost always the biggest space users. If you're running low, open the Photos app, go to the Albums tab, and look for "Recently Deleted." Any photo or video you delete goes there first and stays for 30 days before being permanently removed. Emptying that folder when ready frees up space. You can also delete entire albums or use iCloud Photos to store originals in the cloud instead of on your phone.

Using iCloud to store photos and documents instead

If you turn on iCloud Photos in Settings > [Your Name] > iCloud > Photos, your iPhone stores full-resolution originals in iCloud and keeps lower-resolution versions on your phone. This frees up significant space — often 10 to 20 GB or more — while keeping all your photos accessible. You pay for iCloud storage if you exceed 5 GB, but many people find it worth the cost.

Documents created in Notes, Reminders, and other Apple apps also sync to iCloud automatically, so they don't take up local storage. If you use iCloud Drive, files stored there don't count against your phone's capacity either.

Frequently Asked Questions

Why does my iPhone say I have 256 GB but the storage screen shows less?

Manufacturers advertise storage in decimal gigabytes (1 billion bytes per GB), but your iPhone measures it in binary gigabytes (1.074 billion bytes per GB). The difference adds up — a 256 GB phone actually shows about 238 GB usable. This is normal and not a defect.

Can I check storage on my iPhone without going into Settings?

Yes. Open the App Store app, tap your profile picture in the top right, then scroll down to see "Account Storage." This shows only how much space apps are using, not your total storage or photos and videos, but it's faster if you just need to check app size.

What happens if my iPhone storage is completely full?

Your iPhone will refuse to take new photos, install apps, or read updates. It may also become very slow. You must delete something — usually photos, videos, or unused apps — to free up space before the phone will function normally again.

Does deleting an app free up all its storage?

Mostly, yes. When you delete an app, the app itself and its data are removed. However, some apps store data in iCloud or in shared folders that may not be deleted automatically. If you want to be thorough, go to Settings > General > iPhone Storage, find the app, tap it, and choose "Offload App" first. This removes the app but keeps its data. Then tap it again and choose "Delete App" to remove everything.

Is there a way to see storage on an older iPhone model?

The process is the same on all iPhones running iOS 13 or newer. If you have an older phone running an earlier version of iOS, go to Settings > General > Storage and iCloud Usage instead. The information is the same, just organized slightly differently.