What cache is and why you might want to clear it

Cache is temporary data that apps and your browser store on your device to load faster the next time you use them. When you visit a website, your browser saves images and text. When you open an app, it stores login information and settings. This speeds things up — but over time, cache can take up storage space, cause apps to behave oddly, or hold onto data you'd rather not keep.

Clearing cache does not delete your passwords, photos, messages, or any files you created. It only removes the temporary copies apps made to run more smoothly. On Samsung devices, you can clear cache for individual apps or for your entire browser in a few taps.

Key Takeaways

  • Cache is temporary data apps store to load faster, separate from your actual files and passwords.
  • You can clear cache for one app at a time through Settings, or clear your browser cache all at once.
  • Clearing cache frees up storage space and can fix apps that are freezing or loading slowly.
  • The steps are nearly identical on all recent Samsung phones and tablets running Android 10 or later.

Clear cache for a single app through Settings

This method works when one app is slow or misbehaving and you want to clear only that app's cache without touching anything else.

Open Settings and tap Apps. You may see it labeled Applications on older Samsung models. Scroll down and find the app you want to clear cache for — for example, Chrome, Facebook, or Gmail. Tap the app name to open its details page.

On the app details page, tap Storage. You will see two buttons: Clear Cache and Clear Data. Tap Clear Cache only. Do not tap Clear Data, which removes your login information and settings for that app. After you tap Clear Cache, you will see a confirmation message. The app is now cleared and ready to use.

Clear cache for all apps at once

If you want to free up storage space across your entire device without clearing cache app by app, you can clear all cached data in one step.

Open Settings and tap Storage. At the bottom of the screen, tap Clean Now or Optimize Now — the exact wording varies by Samsung model and Android version. Your device will scan for temporary files, cache, and other data it can safely remove. Tap the button again to confirm. This process usually takes less than a minute.

This method clears cache for every app on your device at once, but does not touch your photos, messages, files, or app passwords. You may notice apps take slightly longer to open the first time after clearing cache, because they are rebuilding their temporary files.

Clear your browser cache in Samsung Internet or Chrome

If you use Samsung Internet (the default browser on most Samsung phones), open the app and tap the three-line menu icon in the bottom right corner. Tap Settings, then Privacy. Tap Delete Browsing Data. Make sure Cached Images and Files is checked, then tap Delete.

If you use Google Chrome instead, open Chrome and tap the three-dot menu in the top right corner. Tap Settings, then Privacy and Security. Tap Clear Browsing Data. At the top, set the time range to All Time if you want to clear everything, or choose a specific range. Make sure Cached Images and Files is checked, then tap Clear Data.

What to do if clearing cache does not fix the problem

If an app is still slow or crashing after you clear its cache, the problem may be deeper. Try closing the app completely and reopening it. If that does not work, restart your phone by holding the power button and tapping Restart.

If the app continues to misbehave, you can uninstall and reinstall it. Open Settings, go to Apps, find the app, tap Uninstall, then read it again from the Google Play Store. This removes all of the app's data and gives it a fresh start. You will need to log in again, but this often solves persistent problems.

How often you should clear cache

There is no single right answer — it depends on how much you use your phone and how much storage space you have. If your device is running low on storage or you notice apps slowing down, clearing cache is a safe first step. Many people clear cache once a month or whenever they notice their phone feeling sluggish.

You do not need to clear cache constantly. Clearing it too often may actually slow down your apps slightly, because they have to rebuild their temporary files more often. A reasonable approach is to clear cache when you notice a problem or when your storage is nearly full.

Frequently Asked Questions

Will clearing cache delete my photos or messages?

No. Cache is only temporary data that apps create to run faster. Your photos, messages, files, and any data you created stay on your device. Clearing cache only removes the temporary copies apps made.

Can I clear cache without losing my passwords?

Yes, as long as you tap Clear Cache and not Clear Data. Clear Cache removes only temporary files. Clear Data removes passwords, login information, and app settings. Always choose Clear Cache unless you want to completely reset an app.

Why is my app still slow after I cleared cache?

Cache is usually not the cause of slow apps. If clearing cache does not help, restart your phone or uninstall and reinstall the app. If the problem continues, the app itself may have a bug, or your phone may not have enough free storage space for the app to run properly.

Does clearing cache free up a lot of storage space?

It depends on how much cache has built up. Clearing cache typically frees up between 100 megabytes and a few gigabytes, depending on how long it has been since you last cleared it and how many apps you use. It is worth doing if your storage is nearly full.

Can I set my Samsung to clear cache automatically?

Samsung does not have a built-in automatic cache-clearing feature in Settings. However, some third-party apps offer scheduled cache clearing. Be cautious with these apps — stick to well-known options from the Google Play Store, and avoid apps that promise to "speed up" your phone dramatically, as they often do little.