Where to find your iPhone's storage information

Open Settings, then tap General, then iPhone Storage. The top of the screen shows your total storage capacity and how much you are currently using. Below that, you see a colored bar: the different colors represent photos, apps, system files, and other data. Tap any category to see what is taking up space.

The number at the top tells you exactly how much gigabytes (GB) you have left. If you have a 128 GB iPhone and you are using 95 GB, the screen will show you are using 95 GB of 128 GB, leaving 33 GB free. This is the most direct way to answer the question "how much storage do I have left."

Key Takeaways

  • Go to Settings > General > iPhone Storage to see your total capacity and how much space you are using right now.
  • The colored bar shows you at a glance which types of files (apps, photos, system) are taking up the most room.
  • Tapping any app or category in the list shows you its size and when you last used it, which helps you decide what to delete.
  • If your iPhone is almost full, deleting large apps, old photos, or cached data from apps like Safari can free up several gigabytes quickly.

Understanding the storage breakdown

The colored bar in iPhone Storage breaks down your space into categories. Apps (usually blue) show all installed applications. Photos and Videos (usually yellow or orange) include everything in your Photos app and Live Photos. System (usually gray) is the operating system itself and cannot be deleted. Other (usually purple) includes cached data, temporary files, and documents stored inside apps.

The "Other" category often grows over time because apps store temporary files, browser caches, and old message attachments there. This is why your iPhone can feel full even though you do not see obvious large files. Clearing Safari history and website data, or offloading unused apps, can shrink this category significantly.

What the different storage sizes mean

iPhones come in different total capacities: 64 GB, 128 GB, 256 GB, 512 GB, or 1 TB (which equals 1,024 GB). The size you chose when you bought your phone is the maximum you can store. You cannot upgrade it later — storage is built into the phone and cannot be expanded with an external card.

The actual usable space is slightly less than the advertised number because the operating system and built-in apps take up room. A 128 GB iPhone typically has around 110 to 115 GB available for your own files, apps, and photos when it is brand new. The rest is reserved for iOS itself.

How to free up storage when your iPhone is full

If your iPhone Storage screen shows you are running low, the fastest way to gain space is to delete large apps you no longer use. Tap any app in the iPhone Storage list to see its size. Games and social media apps often take up 500 MB to several GB each. Deleting one large app can free up 1 to 3 GB when ready.

Photos and videos are usually the next biggest space users. Open the Photos app, go to the Albums tab, and look for "Recently Deleted." Permanently delete anything there — those files are taking up space even though you cannot see them in your main library. You can also delete old videos, which take up far more space than photos.

If you want to keep your photos but free up space, turn on iCloud Photos in Settings > [Your Name] > iCloud > Photos. This stores full-resolution copies in iCloud and keeps lower-resolution versions on your phone, saving gigabytes of local storage. You can also clear Safari cache by going to Settings > Safari > Clear History and Website Data.

The difference between GB and other storage terms

A gigabyte (GB) is a unit of digital storage. One GB equals 1,024 megabytes (MB). One megabyte equals 1,024 kilobytes (KB). A typical photo is 2 to 5 MB. A typical app is 50 MB to 500 MB. A two-minute video is usually 100 MB to 400 MB depending on quality.

When Apple advertises a "128 GB iPhone," they mean the total capacity is 128 gigabytes. In real-world terms, that is enough for roughly 25,000 to 30,000 photos, or 50 to 100 hours of video, or 500 to 1,000 apps — though you will never use all of it because the operating system takes up space and you will have a mix of files.

Why your iPhone says it is full when it is not

Sometimes iPhone Storage shows you have only 1 or 2 GB free, but you cannot find files to delete. This usually means the "Other" category is large, or your phone is counting temporary files that will delete themselves. Restarting your iPhone often frees up 500 MB to 1 GB by clearing temporary cache.

Another reason is that iOS itself can temporarily need extra space to install updates. If your phone says it is full and you are trying to update to a new iOS version, delete a large app temporarily, install the update, then reinstall the app afterward. The update process requires free space to work, even though it does not permanently use that much room.

Checking storage on older iPhone models

The steps are the same on all iPhones running iOS 15 or newer: Settings > General > iPhone Storage. If you have an older iPhone running iOS 14 or earlier, the screen looks slightly different but contains the same information. The colored bar and app list are in the same place, just with a different layout.

If you cannot find iPhone Storage in General settings, your phone is running an older version of iOS. Tap Settings > General > About instead, and look for "Capacity" and "Available" — these show your total storage and free space, though they do not break down what is using the space. You can still see app sizes by going to Settings > General > iPhone Storage (or Storage in older versions).

Frequently Asked Questions

How much storage do I actually need on an iPhone?

For most people, 128 GB is enough. If you take many photos and videos, or install lots of apps and games, 256 GB is safer. If you store movies or large files locally, consider 512 GB. Most people never use more than 100 GB, so the base model works fine if you delete old photos and apps regularly.

Does iCloud storage count toward my iPhone storage?

No. iCloud is separate cloud storage that lives on Apple's servers, not on your phone. Your iPhone storage is only the space on the device itself. If you turn on iCloud Photos, your full-resolution originals go to iCloud, but your phone keeps lower-resolution copies, so you still use some local storage.

Can I see how much storage each app is using?

Yes. In Settings > General > iPhone Storage, the list shows every app with its size next to it. Tap an app to see when you last used it and options to offload or delete it. Offloading removes the app but keeps your data, so reinstalling it later restores everything.

What happens if my iPhone storage is completely full?

Your phone will slow down and may refuse to take photos or install updates. You will not lose existing files, but you cannot add new ones until you delete something. Delete large apps, old photos, or clear app caches to free up space when ready.

Why does my iPhone say 128 GB but I can only use 110 GB?

iOS and built-in apps take up about 10 to 15 GB on a new iPhone. The advertised capacity is the total storage, not the space available to you. This is normal and happens on all iPhones — the operating system needs its own space to run.