A bloated Facebook cache can make the app sluggish, cause images to stop loading, or eat gigabytes of storage. Clearing it usually fixes those issues. The catch: Android gives you a proper Clear cache button, while iPhone has no direct equivalent, so you have to use a workaround. Here is the accurate way to do it on both in 2026, and exactly what it touches.
What the cache actually is
The cache is temporary files Facebook stores on your device: thumbnails, cached images, preloaded posts, and in-app browser data. These help the app load faster, but they can grow large or become corrupted. Clearing them is safe. Your account lives on Facebook's servers, so clearing local cache does not delete your posts, photos, messages, or friends. It only removes disposable files the app can rebuild.
One important distinction on Android: Clear cache and Clear storage (sometimes labeled Clear data) are not the same thing. Clear cache removes only temporary files and keeps you logged in. Clear storage wipes everything local, logs you out, and resets the app's settings. For a normal cleanup, you want Clear cache.
Clear the Facebook cache on Android
Android lets you do this from the system settings without opening Facebook at all:
- Open your phone's Settings app.
- Tap Apps (on some phones this is Apps & notifications or App management, then See all apps).
- Find and tap Facebook in the list.
- Tap Storage (on Samsung and some others it reads Storage & cache).
- Tap Clear cache.
The cache size drops to zero and the app keeps you signed in. Your version may label these menus slightly differently by manufacturer, but the path is always Settings → the app → Storage → Clear cache. Avoid Clear storage unless you specifically want to log out and reset the app to fix a deeper problem.
Clear the Facebook cache on iPhone
Be honest with yourself here: iOS has no per-app "Clear cache" button. Facebook cannot add one because Apple does not expose that control. You have two real options.
Offload the app (frees space, keeps data)
- Open Settings → General → iPhone Storage.
- Scroll down and tap Facebook.
- Tap Offload App, then confirm.
Offloading removes the app itself but deliberately keeps its documents and data. That reclaims the space the app binary takes up, but it does not reliably clear the cache, because your data is restored when you reinstall. Use it only when you are short on space and want the app back later with your data intact.
Delete and reinstall (the real cache clear)
To genuinely clear the Facebook cache on iPhone, delete the app and reinstall it:
- Press and hold the Facebook icon on your Home Screen.
- Tap Remove App, then Delete App and confirm. This removes all local files, cache included.
- Open the App Store, search Facebook, and reinstall it.
- Open the app and log back in.
Because deleting also removes saved logins, have your email/phone and password (or a passkey) ready before you start.
Clear the in-app browser cache (both platforms)
Facebook opens most links in its own built-in browser, which keeps a separate cache and cookies you can clear inside the app on both Android and iPhone:
- Open Facebook and tap the menu (the icon showing your profile picture or the three-line menu).
- Go to Settings & Privacy → Settings.
- Scroll to Browser (it may sit under a Preferences heading).
- Tap Clear next to your browsing data.
Menu wording shifts between app versions, so if you do not see Browser, use the search box at the top of Settings and type "browser." This only clears the in-app browser, not the whole app cache.
What it does to your logins and saved data
- Android Clear cache: keeps you logged in, keeps your settings, deletes only temporary files.
- Android Clear storage/data: logs you out and resets the app; only use it to fix a stubborn bug.
- iPhone Offload: keeps your data and login; does not truly clear cache.
- iPhone Delete & reinstall: removes local cache and saved logins; you will sign in again.
In every case, nothing on your actual account changes. The first launch after clearing may feel slightly slower while the app rebuilds its cache, then returns to normal.
Frequently asked questions
Does clearing the Facebook cache delete my photos or messages?
No. Your photos, posts, and Messenger conversations are stored on Facebook's servers, not in the cache. Clearing the cache only removes temporary files on your device and cannot delete your content.
Will I have to log back in after clearing the cache?
On Android, using Clear cache keeps you signed in. You only get logged out if you use Clear storage/data, or on iPhone if you delete and reinstall the app. Offloading on iPhone keeps you logged in.
How often should I clear it?
There is no need to do it on a schedule. Clear the cache when the app is misbehaving (images not loading, crashes, freezing) or when you need to free up storage. Clearing it constantly just makes the app reload files it would otherwise reuse.