Instagram quietly saves copies of the photos, videos, Reels, Stories and profile pictures you scroll past. It does this so they load instantly the next time and so you use less mobile data. That saved pile is the cache, and over weeks of use it can grow from a few megabytes to well over a gigabyte. Clearing it can free up storage and fix an app that has started to lag or misbehave. The method is different on Android and iPhone, and the difference matters.
Why the Instagram cache grows
Every time media loads in your feed, Instagram writes a temporary copy to your device. The more you browse, and the more video-heavy your feed is, the faster this builds up. The cache is meant to be disposable, so removing it is safe. What it does not contain is anything that only exists on your phone in a permanent sense, which is why it is usually harmless to wipe.
Clear the Instagram cache on Android
Android gives you a direct Clear cache button at the system level. Instagram's in-app settings no longer offer a reliable cache option, so use your phone's settings instead:
- Long-press the Instagram icon on your home screen, then tap App info (the small ⓘ or gear). You can also go to Settings → Apps → Instagram.
- Tap Storage (on some phones it reads Storage & cache).
- Tap Clear cache.
The cache size drops to zero immediately and you stay logged in. Your version may label these menus slightly differently: Samsung phones use Settings → Apps → Instagram → Storage, while stock Android uses Storage & cache. Do not tap Clear storage or Clear data unless you intend a full reset, which logs you out and removes local drafts.
The iPhone approach: offload or reinstall
Here is the honest part: iOS has no per-app "clear cache" button, and Instagram does not provide one inside the app either. So on an iPhone you cannot clear the cache in the tidy way Android allows. There are two real workarounds:
Offload the app (keeps your data)
- Open Settings → General → iPhone Storage.
- Scroll to and tap Instagram.
- 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, but it does not fully clear the cache, because the cached media lives in that retained "Documents & Data." Reinstalling brings it back.
Delete and reinstall (clears the cache)
- Long-press the Instagram icon, tap Remove App, then Delete App.
- Open the App Store, search for Instagram, and reinstall it.
- Log back in.
Deleting the app is the only way to genuinely clear the cache on iOS, because it removes the Documents & Data along with everything else. Before you do this, make sure you know your login details, since you will be signed out.
What clearing does and does not delete
Clearing the cache only removes temporary files. It does not touch anything stored on Instagram's servers:
- Safe: your account, posts, Reels, Stories highlights, followers, direct messages and saved collections all live in your account and are untouched.
- On Android "Clear cache": you stay logged in and your unsaved drafts are kept. Only temporary files go.
- On a full reset (Android "Clear storage" / iPhone delete-and-reinstall): you are logged out, and locally stored items such as unposted drafts can be lost. Post or back up anything important first.
In short: routine cache clearing is low-risk, but a full reset behaves like a fresh install.
When to actually do it
Instagram manages its own cache and will overwrite old files on its own, so this is not something you need to do on a schedule. Clear it when there is a reason:
- The app has become slow, laggy or keeps crashing.
- Your phone is low on storage and Instagram is one of the biggest offenders.
- Images or videos load blank, or the feed keeps showing stale content.
If the app still misbehaves after clearing, updating Instagram to the latest version or restarting your phone is usually the next step.
Frequently asked questions
Will clearing the cache log me out of Instagram?
On Android, tapping Clear cache keeps you logged in. On iPhone, the only true cache-clearing method is deleting and reinstalling the app, which does log you out, so have your login ready.
Does clearing the cache delete my photos or messages?
No. Your posts, Stories, DMs and saved items are stored on Instagram's servers, not in the cache. Clearing only removes temporary files on your device. The exception is unposted local drafts, which a full reset or reinstall can remove.
Why is there no clear cache button on my iPhone?
iOS does not expose a per-app cache control, and Instagram has not built one into its iPhone app. Offloading frees the app's own space but keeps cached data, so a delete-and-reinstall is the only way to clear it completely.