What clearing cache does and why you might want to

Cache is temporary data that apps and your phone store to load faster next time. When you open an app, it saves images, login info, and other pieces so it doesn't have to download them again. Over time, this cache can take up gigabytes of storage and sometimes cause apps to behave strangely — freezing, crashing, or showing outdated information.

Clearing cache frees up storage space and can fix apps that are misbehaving. It won't delete your photos, messages, or account information. The app will simply rebuild its cache the next time you use it, which might make it load slightly slower once, then return to normal speed.

Key Takeaways

  • You can clear cache for individual apps through Settings > Apps, or clear all cache at once through Settings > Storage.
  • Clearing cache removes temporary files but keeps your photos, messages, and login information intact.
  • The fastest method depends on whether you want to clear one app or your entire phone's cache at once.
  • After clearing cache, apps may load slightly slower the first time you open them, then return to normal speed.

Clear cache for a single app

Open Settings and tap Apps (some phones call this Application Manager). Find the app you want to clear — you can search for it at the top of the screen. Tap the app name, then look for Storage or Storage and cache.

You'll see two buttons: Clear cache and Clear storage (or Clear data). Tap Clear cache only. Do not tap Clear storage or Clear data, which will delete your login information and settings for that app.

The app will return to its default state the next time you open it. If you were logged in, you'll need to log back in, but your account data on the app's servers remains unchanged.

Clear all cache at once

Open Settings and tap Storage (sometimes called Device storage or Internal storage). Scroll down and tap Cached data or Cache. A popup will ask if you want to delete all cached data — tap OK or Delete.

This removes temporary files from every app on your phone in one step. It typically frees up between 500 MB and 2 GB, depending on how long it's been since you last cleared cache. Like clearing individual app cache, this won't affect your photos, messages, or account logins.

Clear cache on Samsung phones

Samsung phones use the same Settings menu but sometimes label things differently. Open Settings, tap Apps, then select the app you want. Tap Storage, then Clear cache.

To clear all cache at once on Samsung, go to Settings > Device care > Storage > Cached data, then tap Clean. This is often faster than navigating through the main Storage menu.

Clear cache on Google Pixel phones

Pixel phones follow the standard Android path: Settings > Apps > select your app > Storage > Clear cache. To clear all cache, go to Settings > Storage > Cached data > Delete.

Pixel phones also offer a Storage management tool under Settings > Storage that shows which apps are using the most space and recommends what to delete. You can use this to target specific apps if you only want to free up space in certain places.

When to clear cache and what to expect

Clear cache if an app is crashing repeatedly, showing old information, or if your phone is running low on storage. You don't need to clear cache regularly on a schedule — most phones manage it automatically. Clearing cache once every few months is enough for most people.

After clearing cache, the first time you open an app it may load slightly slower while it rebuilds its temporary files. This usually takes only a few seconds. Subsequent opens will be at normal speed. If an app still crashes after clearing cache, try restarting your phone, and if that doesn't work, uninstall and reinstall the app.

The difference between clearing cache and clearing storage

Clear cache removes only temporary files. Clear storage or Clear data removes everything — temporary files, login information, saved settings, and app-specific data. You should almost never use Clear storage unless you're trying to completely reset an app or remove your account from it.

If you accidentally tap Clear storage, the app will act like you just installed it for the first time. You'll need to log back in and reconfigure any settings. Your account data on the company's servers is not deleted, so you can recover it by logging back in.

Frequently Asked Questions

Will clearing cache delete my photos or messages?

No. Cache is temporary data stored by apps and your phone system. Your photos, messages, contacts, and files are stored separately and are not affected by clearing cache. Only temporary files that apps use to load faster are removed.

How much storage will I free up by clearing cache?

It varies by phone and how long it's been since you last cleared cache. Most people free up between 500 MB and 2 GB. Some phones with heavy app use may free up more. You can see exactly how much space cache is taking by going to Settings > Storage and looking at the "Cached data" line before you clear it.

Do I need to clear cache before it gets too big?

No. Your phone manages cache automatically and will not let it consume all your storage. Clearing cache is optional and only necessary if you're running low on space or an app is misbehaving. Most people can go months without clearing cache.

Will I lose my login information if I clear cache?

Clearing cache alone will not log you out. Your login information is stored separately from cache. However, if you accidentally tap "Clear storage" instead of "Clear cache," you will be logged out and need to log back in.

Why is my app still slow after clearing cache?

Clearing cache fixes problems caused by corrupted temporary files, but not all slowness. If an app is still slow, try restarting your phone. If it's still slow after that, the app itself may have a bug or your internet connection may be slow. Uninstalling and reinstalling the app is the next step to try.