What clearing cache actually does
Clearing cache on the Facebook app removes temporary files your phone has stored — things like images, videos, and login information that Facebook saved to load faster next time. It does not delete your messages, photos, or account data. It straightforward tells your phone to forget the shortcuts it took.
You might clear cache when Facebook runs slowly, when images won't load, when you see old posts that should have updated, or when you want to free up phone storage space. The app rebuilds these files the next time you use it, so clearing cache is safe and reversible.
On Android and iPhone, the process is different because the operating systems store and manage files differently. Both take less than a minute.
Key Takeaways
- Clearing cache removes temporary files Facebook stored on your phone, not your messages or photos.
- On Android, go to Settings > Apps > Facebook > Storage > Clear Cache; on iPhone, you delete and reinstall the app or use iPhone Settings > General > iPhone Storage.
- After clearing cache, Facebook will take a few seconds longer to load the first time as it rebuilds those temporary files.
- Clearing cache frees up phone storage and often fixes problems like slow loading or images that won't display.
Clearing cache on Android phones
Open your phone's Settings app — the gear icon usually on your home screen or in your app drawer. Scroll down and tap Apps or Applications (the exact name varies by phone brand).
Find Facebook in the list and tap it. You will see several options; tap Storage or Storage and Cache. Then tap the button that says Clear Cache. A confirmation message may appear — tap it to confirm. You are done. Facebook will still be installed and you will still be logged in.
If you want to also clear data (which removes your login information and forces you to sign in again), you can tap Clear Data on the same screen, but this is not necessary unless Facebook is crashing repeatedly or you want to fully reset it.
Clearing cache on iPhone
iPhone does not have a "clear cache" button inside individual apps the way Android does. Instead, you have two options.
Option 1: Delete and reinstall the app. Press and hold the Facebook app icon on your home screen until a menu appears. Tap Remove App, then Delete App, then Delete to confirm. Open the App Store, search for Facebook, and tap Get, then Install. Sign back in when prompted. This clears all temporary files.
Option 2: Use iPhone Settings. Open Settings, scroll down and tap General, then tap iPhone Storage. Scroll down, find Facebook, and tap it. Tap Offload App. A popup will ask if you want to keep or delete the app's data — tap Offload to remove the app but keep your data. Then go back to the App Store and reinstall Facebook. You will still be logged in.
Both methods work equally well. Deleting and reinstalling is faster if you do not mind signing in again.
What to expect after clearing cache
The first time you open Facebook after clearing cache, it may take a few extra seconds to load because the app is rebuilding those temporary files. Images might load slightly slower than usual for the first few minutes. This is normal and temporary.
After that first load, Facebook should run at normal speed. If you were experiencing problems like frozen screens, images that would not display, or the app crashing, clearing cache often fixes these issues because the app is starting fresh instead of trying to use corrupted temporary files.
When to clear cache versus when to clear data
Clear cache when Facebook is slow, images are not loading, or you want to free up storage space. You stay logged in and lose nothing.
Clear data (or delete and reinstall) only if Facebook keeps crashing, if you want to fully reset your app settings, or if you are selling or giving away your phone. Clearing data removes your login information, so you will have to sign in again. It also removes any custom settings you changed inside the app.
Most problems are fixed by clearing cache alone. You rarely need to clear data unless the app is seriously malfunctioning.
Freeing up storage space with cache clearing
Facebook cache can grow to several hundred megabytes over months of use, especially if you watch a lot of videos. If your phone is running low on storage, clearing Facebook cache is one of the fastest ways to recover space without deleting anything important.
To see how much space cache is using before you clear it, follow the steps above but stop at the Storage screen — it will show you the cache size. On Android it usually says "Cache" with a number next to it. On iPhone, the App Store shows total app size, but most of that is the app itself, not cache.
Frequently Asked Questions
Will clearing cache delete my messages or photos?
No. Cache is only temporary files — shortcuts and copies. Your actual messages, photos, and account data live on Facebook's servers and in your phone's app data, which are separate. Clearing cache only removes the temporary files.
Do I need to clear Facebook cache regularly?
Not unless you are having problems or running low on storage. Most people never need to clear cache. You can clear it once a month if you want to keep your phone running smoothly, but it is not required.
Why does Facebook ask for permission after I clear cache?
When you first open Facebook after clearing cache, it may ask for permission to access your photos, location, or contacts. This is normal — the app is rebuilding its settings. You can grant or deny these permissions the same way you did when you first installed the app.
Will I lose my login information if I clear cache?
No. Clearing cache keeps you logged in. Your login information is stored separately from cache. Only clearing data or deleting the app will log you out.
What if clearing cache does not fix the problem?
If Facebook is still slow or crashing after clearing cache, try clearing data (which fully resets the app) or uninstalling and reinstalling it. If problems continue, the issue may be with your internet connection or your phone's available storage rather than Facebook's cache.