Clearing documents and data on your iPhone helps free storage and protect privacy. This guide walks through safe, Apple-approved steps to remove files, app content, and system data without harming device performance.
Use the structured overview below to match your goal with the best method before you start cleaning up.
| Goal | Where to act | Quick method | Thorough method |
|---|---|---|---|
| Free space by large files | Settings > General > iPhone Storage | Offload Unused Apps | Review Largest Photos & Videos and delete or export them |
| App documents and caches | App library or Settings > General > iPhone Storage | Delete app and redownload | Use in-app Clear Cache when available, or Offload then reinstall |
| Safari website data | Settings > Safari | Remove All Website Data | Review individual sites and remove selected ones |
| Mail attachments and downloads | Mail & Files apps | Delete specific messages and files | Empty Deleted Mailbox and Files recently deleted folder |
| System storage and backups | Settings > General > iPhone Storage & iCloud | Enable Optimize iPhone Storage | Review and manage backups, then delete outdated backups in iCloud |
Review iPhone Storage Overview
Use iPhone Storage to see which apps and data types occupy the most space. This overview highlights categories such as Photos, Mail, and Social apps, and suggests actions like Offload App or Review Downloads.
Navigate to Settings > General > iPhone Storage and sort by size to decide where to focus your cleanup effort before deleting anything.
Manage App Documents and Data
Many apps store documents, spreadsheets, downloads, and offline files that can grow large. Within iPhone Storage, select an app to review its Documents & Data size and choose Delete App to remove everything at once.
Preserve important work
Export or move critical files to iCloud Drive, Files, or the corresponding service before deleting, then reinstall the app if needed to restore access.
Clear Safari and Website Data
Websites may store cookies and cached images that accumulate over time. In Settings > Safari, you can Remove All Website Data to reset permissions and free space.
If you prefer finer control, scroll in Settings > Safari > Advanced > Website Data to review and remove specific sites instead of clearing everything at once.
Empty Mail, Files, and Messages
Message attachments, Mail downloads, and Files local folders can linger long after you view them. Open the Files app, tap Browse, and delete or move large files to cloud storage.
In Mail, delete messages with large attachments and then tap Edit > Deleted Messages to empty the Deleted Mailbox immediately rather than waiting 30 days.
Optimize Photos and Media
High-resolution photos and videos often occupy the most storage. Go to Settings > Photos and enable Optimize iPhone Storage to keep smaller versions on device while full-res versions remain in iCloud.
Use iPhone Storage > Photos to review and delete duplicates, blurry shots, and videos you rarely watch, always confirming you have a recent backup when possible.
Maintain a Clean iPhone Going Forward
- Review iPhone Storage monthly to catch large files early
- Enable Optimize iPhone Storage for Photos to save device space
- Offload unused apps instead of deleting to preserve documents
- Empty Deleted Mailbox and Files recently deleted folder regularly
- Remove unneeded Safari website data and app caches periodically
- Keep iCloud backups current before removing old backups
FAQ
Reader questions
Will deleting app documents remove my account or settings?
Deleting app documents usually removes cached files and saved data within the app, but your account login and general settings often remain. Re-linking your account after reinstallation is sometimes required.
Does clearing Safari data log me out of websites?
Yes, removing all website data will sign you out of websites and remove cookies, so be prepared to sign back in to services you use frequently.
Can offloading an app preserve documents while freeing space?
Offload App removes the app but preserves its documents and data so that reinstalling the app can restore your previous files without losing progress. Check Settings > [Your Name] > iCloud > Manage Storage > Backups to verify device backups, then delete outdated backups only after confirming current ones exist.