Threads caches images, videos, and feeds that can grow to hundreds of megabytes or more, and you can clear that storage on both iPhone and Android without losing your account. Threads has no in-app cache button, so the method differs slightly per platform.
Short answer:
- Android: go to Settings > Apps > Threads > Storage and tap Clear cache (safe). Avoid Clear storage, which logs you out.
- iPhone: there's no in-app cache clear, so offload Threads via iPhone Storage or delete and reinstall it.
- Your posts, followers, and drafts that synced are stored on Meta's servers and survive a cache clear.
Why Threads Uses So Much Storage
Threads is a media-heavy feed: it autoplays video, loads large images, and caches everything you scroll past so it reappears instantly. All of that downloaded media accumulates as cache over time.
On iPhone, check it under Settings > General > iPhone Storage > Threads, where Documents & Data holds the cache. On Android, open Settings > Apps > Threads > Storage to see Cache listed separately from app data.
Almost all of this is disposable. Your threads, replies, likes, and follow list live in your Meta account on Threads' servers, so wiping the local cache loses nothing permanent.
Clear Threads Cache on Android (Safest)
Android exposes a true cache clear that frees space without signing you out.
- Open Settings > Apps (or Apps & notifications).
- Find and tap Threads, then tap Storage (or Storage & cache).
- Tap Clear cache.
This deletes only temporary media and feed files. Threads rebuilds them as you browse, and you stay logged in with everything intact. You can safely repeat this whenever the cache creeps back up.
For more on the Android approach, see our guide on clearing app cache on Android safely.
Cache vs Clear Storage: Don't Confuse Them
On the same Android screen you'll see a second button, and the difference matters a lot.
- Clear cache: removes temporary files only. Safe. You stay logged in.
- Clear storage / Clear data: wipes everything, logging you out and discarding any unsynced drafts or settings.
Use Clear cache for routine cleanup. Only use Clear storage if you're troubleshooting a broken app and are ready to sign in again afterward.
Clear Threads Storage on iPhone
iOS doesn't give apps a cache button, and Threads doesn't include one in its settings. To reclaim its cached space you reset the app from iOS.
Go to Settings > General > iPhone Storage > Threads:
- Tap Offload App to remove the app but keep its data, then reinstall it to clear the cache.
- Tap Delete App for a complete wipe, then reinstall from the App Store and log back in.
Because your content lives in your Meta account, signing back in restores your profile, posts, and follows. Only confirm that any in-progress drafts have been posted first, since an unsynced draft can be lost in a full delete.
Slow Down Cache Growth
You can reduce how quickly Threads rebuilds its cache by limiting media. Inside Threads, open your profile, tap the menu, and look under data or media settings for Media quality or data-saving options, then choose the lower-data setting where available.
Disabling autoplay and high-resolution media means less gets downloaded as you scroll, so Documents & Data (or the Android cache) grows more slowly between clears. On a metered connection this also saves data, not just storage.
What Survives and What Doesn't
It helps to know exactly where your Threads data lives, so you clean confidently.
- Posts, replies, likes, and follows: stored in your Meta account, untouched by any cache clear.
- Cache (media and feed files): disposable, this is what Clear cache removes and what offload/reinstall resets.
- Unsynced drafts: the only thing genuinely local; post or save them before a full Clear storage or delete.
Because Threads shares your account with Instagram, signing back in after a reinstall is quick, your profile, followers, and history all reappear from the cloud. The only practical risk is an in-progress draft you never published, so check for those first.
Keep Threads and Your Phone Tidy
A light routine keeps Threads from quietly reclaiming space:
- Android: clear the cache from Storage every few weeks.
- iPhone: offload or reinstall Threads when Documents & Data balloons.
- Check your phone's storage screen occasionally to confirm Threads stays in check.
Threads is just one app, and the rest of your phone usually needs attention too. On Android, a review-first tool like Cleanor scans on-device and surfaces large videos and duplicate photos, showing each batch before you confirm a deletion. For a fuller plan, see the clean up phone storage hub and the storage cleanup FAQ. With the cache cleared, Threads keeps working exactly as before, just without the storage creep.
Want the fast version? Cleanor for iPhone scans on-device — nothing uploaded — and surfaces your largest videos, duplicate photos, and heavy caches in one pass. For the full routine, see the free up phone storage guide.
FAQ
How do I clear the Threads cache on Android?
Go to Settings > Apps > Threads > Storage and tap Clear cache. This removes only temporary media and feed files, keeps you logged in, and can be repeated safely whenever the cache creeps back up.
Why is there no cache button for Threads on iPhone?
iOS doesn't give apps a cache button and Threads includes none in its settings, so you reset the app from Settings > General > iPhone Storage > Threads by tapping Offload App or Delete App, then reinstalling to clear the cache.
Does clearing the Threads cache affect my posts and followers?
No. Your posts, replies, likes, and follows are stored in your Meta account and survive any cache clear. The only genuinely local item is an unsynced draft, so post or save it before a full Clear storage or delete.