How Do You Find What's Taking Up Storage on iPhone?

Q: How do you find what's taking up storage on iPhone?

Go to Settings > General > iPhone Storage. You'll see a color-coded bar showing storage by category (Apps, Photos, Media, Messages, System Data, Other) and a list of every app sorted by size. Tap any app to see its app size versus its data/documents size, and get options to offload or delete it. The page may take 30–60 seconds to fully load as iOS calculates sizes.

By Jack Smith · Updated March 8, 2026

Go to Settings > General > iPhone Storage to see a color-coded breakdown of what's using your storage. You'll see categories like Apps, Photos, Media, Messages, and System Data, plus a list of every app sorted by size. Tap any app to see its app size versus data size and get options to offload or delete it. The page may take 30–60 seconds to fully load.

Understanding the Storage Breakdown Screen

The iPhone Storage screen in Settings shows a horizontal bar graph at the top, color-coded by category:

Apps (red/pink): The combined size of all installed applications and their cached data
Photos (yellow): Your entire photo and video library, including the Recently Deleted album
Media (blue): Downloaded music, podcasts, TV shows, and movies
Messages (green): Text messages and their attachments (photos, videos, GIFs shared via iMessage)
System Data (gray): Caches, logs, and temporary files iOS manages internally
iOS (dark gray): The operating system itself, typically 7–12 GB

Below the bar, every app is listed from largest to smallest, showing how much space each one uses. This is where most people discover surprising storage hogs.

Common Surprise Storage Consumers

Users are often surprised to find these apps near the top of the list:

Photos: Usually the single largest item, often 20–60 GB on a well-used iPhone
Messages: Years of iMessage conversations with photos and videos can consume 5–15 GB
Safari: Website data and offline reading lists can grow to several GB
Podcasts: Auto-downloaded episodes pile up quickly if not set to auto-delete
Social media apps (TikTok, Instagram, Snapchat): Cache and saved media can reach 2–5 GB each
Streaming apps (Netflix, Spotify): Downloaded content for offline use

Learn more about hidden storage consumers in our article on what is "Other" storage on iPhone.

How to Check Individual App Data

Tap any app in the iPhone Storage list to see two numbers:

App Size: The size of the app binary itself (this is re-downloaded if you offload)
Documents & Data: User data, caches, downloads, and saved files within the app

Often, an app's Documents & Data is much larger than the app itself. For example, a social media app might be 200 MB but have 3 GB of cached content. Offloading the app removes the app binary but keeps the data; deleting the app removes everything.

Checking iCloud Storage Separately

iPhone Storage and iCloud Storage are completely different. To check your iCloud usage, go to Settings > [Your Name] > iCloud > Manage Account Storage. This shows what's using your 5 GB (free) or paid iCloud+ plan. For a detailed walkthrough, see our page on how to check iCloud storage usage.

Using Apple's Recommendations

At the top of the iPhone Storage screen, Apple sometimes shows personalized recommendations such as "Offload Unused Apps," "Review Large Attachments," or "Auto Delete Old Conversations." These suggestions can be helpful starting points, but they won't always catch everything. For a thorough cleanup of your photo library specifically, a dedicated tool like Swype Photo Cleaner helps you rapidly sort through and delete unwanted photos.

When the Numbers Don't Add Up

Sometimes the storage categories shown in the bar don't seem to match your total used space. This is usually because of purgeable storage or System Data that iOS manages automatically. These categories can fluctuate and aren't always immediately reclaimable. A restart can sometimes help iOS recalculate and clean up temporary caches.

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