I’m trying to free up space on my iPhone by clearing the Facebook cache, but I’m worried it might remove videos I downloaded or saved in the app. Has anyone done this before, and does clearing Facebook cache delete downloaded videos or just temporary files?
If Facebook is taking up a few gigs on your iPhone, clearing it is a little less obvious than it should be. The main thing to know is that your actual Facebook account stuff is safe. Your posts, photos, friends, messages, and profile data are on Facebook’s servers, not just sitting inside the app on your phone.
The only real catch is offline video downloads. If you saved videos inside Facebook for offline viewing, deleting the app removes those local downloads. You can download them again later from the app, but they are not treated the same way as your normal account content.
The cleanest fix is deleting and reinstalling Facebook
Go to Settings > General > iPhone Storage > Facebook, then choose Delete App. That removes the app itself along with the local cache, temporary files, and app database. After reinstalling Facebook, you’ll need to log in again, but this is the method that actually clears the built-up junk that makes the app show huge storage numbers.
Offloading the app is different. If you tap Offload App from that same iPhone Storage screen, iOS removes the app code but keeps the Documents and Data. That can help with a broken install or random app glitches, and it usually keeps your login and settings around, but it does not really solve the storage problem because the local data stays there.
There is also a smaller cache clear inside Facebook itself. Open Facebook, then go to Menu > Settings and Privacy > Settings > Browser, and tap Clear next to Cookies and Cache. This only clears website data from links opened through Facebook’s built-in browser. It might help if links are acting weird or loading slowly, but it usually will not free up much space.
Why Facebook fills back up again
Facebook caches a lot by design. Images you scroll past, videos that autoplay, and pages you open from links all get stored locally so the app feels faster the next time you use it. So if you clear 2GB today and then use the app normally tomorrow, a big chunk of that can come back pretty quickly. There is not really a permanent switch to stop it. You just have to clean it out from time to time.
Also, clearing Facebook is not always the thing that fixes a slow iPhone. It is easy to blame Facebook because the storage number is right there, but the Photos app is usually the bigger problem. Old 4K videos, burst shots, screenshots, and duplicate-looking photos can quietly eat way more space than a social media cache.
When iPhone storage gets too close to full, iOS has less room for background work, and the whole phone can start feeling sluggish no matter which app you clear.
What helps with the bigger storage issue
Clever Cleaner does not clear Facebook cache or app data. You still need the manual Facebook steps for that. What it does help with is finding the photo and video files that are actually taking up serious storage. It is free, has no ads, and does not require a subscription.
The Heavies tab sorts your files from largest to smallest and shows the exact size of each one. That makes it much easier to spot old videos that are taking up hundreds of megabytes or close to a gigabyte without having to scroll through your camera roll forever.
The Similars tab groups photos that are almost the same and suggests a Best Shot from each group. If you have several versions of the same scene, you can clean them up quickly while still seeing file sizes before deleting anything.
All of the processing happens on the iPhone itself. Nothing gets uploaded to an outside server.
The practical order is: delete and reinstall Facebook first if you need the immediate space back or the app is crashing. Then clean up the photo library with Clever Cleaner if the phone is still low on storage. After deleting photos or videos, go to Photos > Recently Deleted > Delete All, otherwise the storage will not actually be freed yet.
Saved and downloaded are not the same thing.
If you tapped Save on a Facebook video, that is basically a bookmark tied to your account. Clearing cache or reinstalling the app should not remove it from your Saved list. If you used any offline download feature inside Facebook, that file is local app data, and that is the stuff most likely to disappear when you delete the app or wipe its data.
I agree with the earlier point that deleting and reinstalling Facebook is usually the only real way to shrink the app when it gets bloated. The annoying catch is that iPhone does not give you a neat “clear only junk, keep offline videos” button for Facebook. The app’s Documents and Data is a mixed bucket, so you should assume local/offline items may go with it.
Before deleting anything, open Facebook and check your Saved section versus Downloads/offline videos, if your version of the app shows that. If the videos are only saved, you’re fine. If they are downloaded for offline watching, watch them first or be ready to download them again later. Also expect Facebook to grow again pretty fast after a few days of scrolling, especially with autoplay video on.
Expect Facebook to reclaim less space than the storage screen makes it look like unless you delete the app. The “clear cache” option inside Facebook mostly deals with its built-in browser, so it won’t necessarily touch all the image/video junk that made the app huge in iPhone Storage.
I’d treat anything downloaded inside Facebook for offline viewing as disposable local data. If you delete the app, that can go with it. If you only hit “Save” on a video, that’s just tied to your Facebook account and should still be there after you log back in. If the video was saved to your Photos app or Files app separately, clearing Facebook will not remove that copy.
Small thing people forget: before deleting Facebook, make sure you know your login and have 2FA access. Getting space back is nice, but getting locked out because the app remembered your password and you didn’t is a very annoying trade. If the goal is just a quick cleanup, try the Facebook browser cache first. If the goal is actually freeing gigabytes, delete and reinstall, but assume offline downloads need to be re-downloaded.
If the video is in your Camera Roll, clearing Facebook cache won’t touch it. If it only exists inside Facebook as an offline download, I’d treat it like temporary app data and assume it may vanish, especially with delete/reinstall. Saved videos are different since they’re more like bookmarks on your account.
Honestly, the download worry is mostly theoretical for a lot of people. Facebook’s proper offline save feature has been quietly shrinking for years, and plenty of accounts don’t even see a real Downloads section anymore. What most folks actually did was hit the share arrow and export the clip to their Camera Roll. If that’s you, then clearing or nuking the app touches nothing. So step one is just checking where the video really lives before you stress about it.
The @caminantenocturno and @byteguru split of saved vs downloaded is the right way to think about it, no argument there. Where I’d push back a little is the framing that delete and reinstall is some clean, surgical fix. It works, but it’s a sledgehammer. You lose your login state, any in-app drafts, notification permissions sometimes reset, and Messenger is a whole separate app with its own cache that people forget about. If Messenger is the thing that’s bloated, reinstalling Facebook does nothing for it.
One detail nobody flagged: that storage number in iPhone Storage is not always honest. iOS lumps a lot of reclaimable cache into that figure, and the system will often purge chunks of it on its own when space gets tight. So sometimes you panic over 3GB, and if you’d just left it alone and let the phone run low, iOS would have trimmed it anyway. Not reliable enough to depend on, but worth knowing before you go through the reinstall hassle every week.
On @mikeappsreviewer’s point about Photos being the bigger hog, that’s the honest takeaway here. Facebook cache is loud but small in the grand scheme. Clever Cleaner is fine for that part, the Heavies view sorting by file size is a quick way to find the one 900MB video eating your storage, and it doesn’t touch Facebook at all so it’s not competing with the reinstall step. Just don’t expect any cleaner to do anything about the app cache. Different problem.
If your only goal is space back today, my order would be: confirm your videos are in Camera Roll or on your account, log your password and 2FA somewhere, then delete and reinstall. Then empty Recently Deleted in Photos, because that trips people up constantly. Skip Offload, it genuinely doesn’t help the storage side.