Where iPhone stores documents and data, and how to find it

Your iPhone stores documents and data in several places, and which one you need to clear depends on what's taking up space. The Documents & Data category in Settings shows cached files, temporary downloads, and offline copies that apps have saved — these are the easiest to remove without losing anything permanent. Individual apps also store their own documents separately, and you can delete those app by app. Photos, videos, and email attachments live in their own sections and often take up the most room.

To see what's using space, go to Settings, tap General, then tap iPhone Storage. You'll see a list of apps ranked by size. Tap any app to see a breakdown of how much space the app itself uses versus how much data it has stored. This tells you whether deleting the app will free up a lot of space, or whether the app is small but has accumulated large files inside it.

Key Takeaways

  • Documents & Data cached by apps can be cleared through Settings without deleting the apps themselves, and this is usually safe to do.
  • Individual apps store documents inside their own folders, and you can delete those files through the app or by offloading the app temporarily.
  • Photos, videos, and email attachments are stored separately and often take up more space than app data, so clearing these first usually frees the most room.
  • Deleting an app removes all its stored data permanently, so back up important documents before you uninstall.

Clearing cached files and temporary data without removing apps

The fastest way to free up space is to clear the cached files and temporary data that apps accumulate over time. Go to Settings, tap General, then iPhone Storage. Scroll down and look for apps you use regularly — Messages, Safari, Photos, and Mail often have large cached files. Tap the app name, then tap Offload App. This removes the app but keeps its documents and data on your phone, so you can reinstall it later without losing anything.

If you want to clear the cache without offloading, open the app itself and look for a Settings or Preferences option inside it. Many apps like Safari, Chrome, and Mail have a "Clear History and Website Data" or "Clear Cache" button buried in their settings. This varies by app, so you may need to search the app's help section to find it. Offloading is faster if you're willing to reinstall the app later.

Deleting documents stored inside individual apps

Apps like Notes, Pages, Numbers, and Reminders store documents you create inside them. To delete these, open the app, find the document or file you want to remove, and look for a delete button — usually a trash icon or a swipe-to-delete gesture. In Notes, swipe left on a note and tap Delete. In Files, tap Edit, select the documents you want to remove, then tap Delete. In iCloud Drive, do the same thing.

If you have documents synced across devices through iCloud, deleting them on your iPhone will delete them everywhere. If you want to keep them on your computer or iPad, move them to a different folder or read them to your computer first. You can also turn off iCloud sync for a specific app in Settings, tap your name, tap iCloud, then toggle off the app you want to disconnect. This keeps the documents on your iPhone but stops syncing new changes.

Removing photos and videos to free up the most space

Photos and videos usually take up more space than anything else on your iPhone. Open Photos, tap the Albums tab at the bottom, then tap Recently Deleted. Any photo or video you've deleted in the last 30 days sits here and still counts toward your storage. Tap Select, choose the photos you want to permanently remove, then tap Delete. After 30 days, deleted photos are removed automatically, but you can force it sooner this way.

If you want to keep photos but move them off your phone, use iCloud Photos to store them in the cloud instead. Go to Settings, tap your name, tap iCloud, tap Photos, then turn on iCloud Photos. Your photos sync to iCloud and you can delete the local copies from your phone by going to Settings, tap General, tap iPhone Storage, tap Photos, then tap Reduce iPhone Storage. This keeps the photos accessible through the Photos app but stores them on Apple's servers instead of your phone.

Clearing email attachments and old messages

Email attachments add up quickly, especially if you receive large files or images. Open Mail, select a mailbox like Inbox or All Mail, tap Edit, then select the emails you want to delete. Tap Delete at the bottom. If you want to keep the email but remove the attachment, open the email, tap and hold the attachment, then tap Remove. Some email providers like Gmail and Outlook let you search for large attachments — in Gmail on iPhone, search "has:attachment size:5M" to find emails with attachments larger than 5 megabytes.

To prevent attachments from piling up, go to Settings, tap Mail, scroll down to Message, then tap Remove Attachments. Choose a timeframe like "After One Day" or "After One Week". This automatically deletes downloaded attachments from your phone while keeping the emails themselves. The attachments will read again if you open the email later, so this is safe to do.

Uninstalling apps completely when you no longer need them

Uninstalling an app removes the app and all its stored data permanently. Go to Settings, tap General, tap iPhone Storage, find the app you want to remove, tap it, then tap Delete App. Confirm by tapping Delete App again. If the app is on your home screen, you can also press and hold the app icon, tap Remove App, then tap Delete App. Either way, all documents, cached data, and settings for that app are erased.

Before you uninstall, check whether the app has documents you want to keep. Open the app and look for an export or backup option — many apps like Notes, Reminders, and banking apps let you export your data as a file you can email to yourself or save to iCloud Drive. After you've backed up what matters, uninstalling is safe and frees up all the space the app was using.

Using iCloud to move files off your phone

If you have important documents you want to keep but don't need on your phone, move them to iCloud Drive instead. Open Files, tap Browse, tap iCloud Drive, then create a folder or drag documents into it. These files sync to your other Apple devices and to iCloud.com, so you can access them from a computer or iPad without taking up iPhone storage. You can then delete the local copies from your phone.

You can also use third-party cloud services like Google Drive, Dropbox, or OneDrive. read the app, upload your documents, then delete them from your phone. This works the same way as iCloud but gives you access from any device, including Windows computers and Android phones. Make sure the upload is complete before you delete the local copy.

Frequently Asked Questions

Will deleting Documents & Data break my apps?

No. Documents & Data is cached information that apps read to work faster or offline. Deleting it may slow down the app slightly the first time you use it after clearing the cache, but the app will re-read what it needs. This is one of the safest things to delete on your iPhone.

What happens if I offload an app instead of deleting it?

Offloading removes the app from your phone but keeps all its documents and settings in storage. When you reinstall it, everything comes back exactly as it was. This is useful if you want to free up space temporarily but plan to use the app again later.

Can I recover photos or documents after I delete them?

Photos sit in Recently Deleted for 30 days before they're gone for good, so you can recover them during that window. Documents deleted from Notes, Pages, or Files are gone when ready unless you have a backup. Always back up important files to iCloud or your computer before deleting them.

How much space will I free up by clearing cache?

It varies by app. Social media apps like Instagram and TikTok often have 500 MB to 2 GB of cached videos and images. Messaging apps like WhatsApp and Telegram can have similar amounts. Clearing cache from a few large apps can free up several gigabytes, but the exact amount depends on how long you've used the apps.

Should I turn off iCloud Photos to save space?

Turning off iCloud Photos stops syncing new photos to the cloud, but it doesn't free up space on your phone — your existing photos stay there. To actually save space, use Reduce iPhone Storage instead, which keeps photos in iCloud but deletes the local copies from your phone. You can still view them through the Photos app, but they'll read when you open them.