Where to find your storage information on iPhone

Open Settings, then tap General, then Storage & iCloud Usage. Under iPhone Storage, you will see a bar showing how much space you have used and how much is free. The number below the bar tells you the total capacity of your phone — usually 64GB, 128GB, 256GB, or 512GB depending on which model you own.

Below that bar, your iPhone lists every app installed on your phone, ranked by size from largest to smallest. The number next to each app shows how much space that single app takes up. This is the fastest way to spot which apps are eating your storage without opening each one.

The storage bar itself uses color to show you what is taking up space: gray for the operating system and built-in apps, blue for iCloud, red for photos and videos, green for apps, and other colors for different types of files. If you see a large block of one color, that category is what you need to address.

Key Takeaways

  • Your iPhone storage breakdown lives in Settings > General > Storage & iCloud Usage, and shows every app ranked by size.
  • Photos and videos usually take the most space on an iPhone, especially if you record video or have years of photos stored locally.
  • Apps can store large amounts of cached data — temporary files they keep to load faster — which you can delete without losing your account or settings.
  • Offloading an app removes it from your phone but keeps your data and login information, so you can reinstall it without starting over.
  • iCloud Photos syncs your entire library to Apple's servers and deletes local copies, freeing up phone storage while keeping your photos accessible.

Understanding what each color on the storage bar means

The colored bar in Storage & iCloud Usage is a visual summary of where your space is going. Gray represents iOS itself plus Apple's built-in apps like Mail, Calendar, and Maps — you cannot remove this, and it typically takes 10GB to 20GB depending on your iOS version. Blue means iCloud data syncing to your phone, such as iCloud Drive files or iCloud Mail. Red is photos and videos stored directly on your phone.

Green is all your downloaded apps combined. Other colors represent documents, books, podcasts, or music you have stored locally. If you see a large block of red, your photo library is the problem. If green dominates, you have too many large apps or apps with big cached files. Knowing which color is largest tells you where to focus your cleanup effort.

How to see what space each app is actually using

Tap any app name in the Storage & iCloud Usage list to see a breakdown of how much space it uses. For most apps, you will see two numbers: the app itself (the code and resources it needs to run) and Documents & Data (cached files, downloaded content, and temporary files the app stores). Documents & Data is often much larger than the app itself.

Social media apps like Instagram, TikTok, and Snapchat often have huge Documents & Data sections because they cache every video and image you have viewed. Messaging apps like WhatsApp and Telegram do the same with photos and videos you have received. Streaming apps like Netflix and Spotify cache content so it plays faster or works offline. These cached files are safe to delete — the app will re-read them the next time you use it.

Deleting cached data without losing your account or messages

You have two ways to clear an app's cached files. The safest way is to open the app itself and look for a Settings or Storage option within it. Instagram, for example, has a Storage option under Settings > Account > Storage Usage. Tap it and select Delete All to clear cached photos and videos. Your account stays logged in, your messages stay intact, and the app straightforward re-downloads what it needs next time you open it.

If the app does not have a built-in storage cleaner, go back to Settings > General > Storage & iCloud Usage, tap the app name, and select Offload App. This removes the app from your phone but keeps your login information and any data the app stores in iCloud. When you reinstall it later, you log back in and everything is there. Do not tap Delete App unless you want to remove it completely — that erases the app and all its local data.

A third option is to delete and reinstall the app entirely. Go to your home screen, press and hold the app icon, tap Remove App, then Delete App. Go to the App Store, search for the app, and tap Get to reinstall it. This clears all cached data but you will need to log back in. Use this method only if the app is taking up enormous space and the other methods did not help.

Moving photos and videos to iCloud to free up phone storage

Photos and videos are usually the largest storage hog on an iPhone. If you have years of photos stored directly on your phone, they can easily take up 20GB, 30GB, or more. The fastest way to free up this space is to turn on iCloud Photos, which syncs your entire library to Apple's servers and deletes the full-resolution originals from your phone, keeping only lower-resolution versions for quick viewing.

To turn on iCloud Photos, open Settings, tap your name at the top, then iCloud, then Photos. Toggle on iCloud Photos. Your phone will begin uploading your library — this can take hours or days depending on how many photos you have and your internet speed. Once the upload is complete, your phone will show a message saying "Optimizing iPhone Storage" and your local copies will be replaced with smaller versions.

If you do not want to use iCloud Photos, you can manually delete photos and videos from your phone. Open the Photos app, tap Edit in the top right, select the photos you want to remove, and tap Delete. They will move to the Recently Deleted album, where they stay for 30 days before being permanently erased. This gives you time to change your mind, but it does not back them up anywhere — if you delete them and do not have another copy, they are gone.

Offloading apps you do not use regularly

Offloading is a middle ground between keeping an app and deleting it. When you offload an app, iOS removes the app code from your phone but keeps your login information, messages, and any data stored in iCloud. The app icon stays on your home screen, grayed out. Tap it and your phone will reinstall the app automatically — you log back in and everything is exactly as you left it.

This is useful for apps you use occasionally but not daily. Games, travel apps, or seasonal apps are good candidates. Go to Settings > General > Storage & iCloud Usage, tap the app, and select Offload App. Your phone will ask you to confirm. The app disappears from your storage count when ready. When you need it again, tap the icon and wait for it to reinstall — usually takes a minute or two depending on app size and your internet speed.

You can also set your iPhone to offload apps automatically when storage gets low. Go to Settings > General > iPhone Storage and toggle on Offload Unused Apps. Your phone will then remove apps you have not opened in a while, reinstalling them automatically the moment you tap them. This keeps your phone running smoothly without you having to manually manage every app.

When to consider upgrading your iPhone storage

If you have deleted cached data, offloaded unused apps, and moved photos to iCloud but still have less than 5GB free, your phone is running out of usable space. iOS needs some free space to function properly — when you get below 1GB, your phone slows down, apps crash, and you cannot install updates. At that point, upgrading is usually the practical choice.

Before you upgrade, check whether your storage problem is temporary or permanent. If you just took a week of vacation videos and they are filling your phone, moving them to iCloud or a computer solves the problem without buying a new phone. If you are consistently running out of space even after cleanup, you genuinely use more storage than your current model offers, and upgrading makes sense.

When you buy a new iPhone, you choose the storage capacity at purchase — 64GB, 128GB, 256GB, or 512GB. Most people find 128GB sufficient for years of photos, apps, and files. If you record a lot of video, shoot in high resolution, or keep large apps like games installed, 256GB is safer. 512GB is overkill for most people unless you use your iPhone as a primary video editing device.

Frequently Asked Questions

Why does my iPhone say I have used more storage than my total capacity?

This usually means your phone is counting compressed or temporary files. Restart your iPhone by powering it off and back on, then check Storage & iCloud Usage again. The numbers often correct themselves after a restart. If the problem persists, go to Settings > General > iPhone Storage and scroll to the bottom — sometimes a very large temporary file appears there that iOS will clean up on its own.

If I turn on iCloud Photos, will I lose my photos if I cancel my iCloud subscription?

No. Your photos stay in iCloud for 30 days after your subscription ends. During that time, you can read them to your computer or turn iCloud Photos back on. After 30 days, iCloud deletes them. If you have local copies on your phone or computer, they are not affected — only the iCloud copies are removed.

Can I see storage breakdown by file type, like how much space my emails take up?

Not in the built-in Storage & iCloud Usage tool — it only shows apps. To see email storage, open the Mail app, go to Settings > Accounts, tap your email account, and look for Mailbox Size or Storage. For other file types, you have to check each app individually. iCloud Drive shows its storage in Settings > [Your Name] > iCloud > Manage Storage.

What happens if I delete an app that has important documents in it?

If the documents are stored in iCloud or synced to another service like Google Drive, they stay safe in the cloud. If they are stored only locally in the app, deleting the app deletes them. Before you delete any app, check its settings for a backup or export option. Many apps let you email documents to yourself or save them to iCloud Drive before you remove the app.

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

No. Turning off iCloud Photos stops syncing but keeps all photos currently on your phone. Photos already uploaded to iCloud stay there. If you want to remove iCloud Photos entirely and delete the copies from Apple's servers, go to Settings > [Your Name] > iCloud > Photos and select Delete Photos and Data — this removes them from iCloud but keeps your local copies on your phone.