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How to clear the cache on your Android phone or tablet (and why you should)

Make this process part of your Android maintenance routine.
Written by Jason Cipriani, Contributing Writer on
Reviewed by Kelsey Adams
Storage settings giving options to clear storage or clear cache for Facebook
Jason Cipriani/ZDNET

If you're experiencing slow performance on a smartphone or tablet, there are common steps you can take to troubleshoot and oftentimes fix it. Simply restarting your device can take care of a lot of issues. 

Another common way to increase performance, or at the very least free up extra storage space, on an Android phone is to clear an app's cached data and clear Chrome's cached data for websites you visit.

Also: The best tablets (aren't all iPads)

Below I'll walk you through both processes, which don't take very long at all. The hardest part is figuring out where to look, and that's exactly what I'm going to show you.

As with any tutorial walking you through how to do something on an Android device, the steps for you may differ slightly from what I outline below due to different device manufacturers and customized software on top of Android. But the gist of the process is covered and this should be similar enough to get you, at the very least, pointed in the right direction. (And here's how to clear the cache on an iPhone.)

How to clear an app's cached data

1. View a list of every installed app on your phone or tablet

The quickest way to view all of the apps installed on your Android phone or tablet is to open the Settings app and look through the main list for Storage; tap it. On the next screen find and tap the Apps option. Some phones, such as the Moto G 5G, skip the Storage option and list Apps directly in the Settings app. If you're having trouble finding the Apps listing, use the search bar at the top of the Settings app to find it. 

When viewing the Apps list, to make it easier to see which apps are using the most storage on your device, tap on the three-dot icon in the top-right corner and select Sort by Size.

Android Storage and Apps storage pages showing sorting apps by size
Screenshots by Jason Cipriani/ZDNET

2. Clear an app's cache

Select any app from the list. Note that I specified selecting an app and not a system service such as Android System Intelligence because I've had mixed results when clearing the cache of a system app or service. So I only recommend doing this for apps.

When you open an app, you can see the app size, user data, cache size and the total amount of storage it's taking up. At the top of the page you'll have two options: Clear storage and Clear cache.

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Don't select Clear storage as that will more or less reset the app and you'll have to set it all up again. However, you can clear out the cache without any negative consequences.

Clearing the cache for Facebook
Screenshots by Jason Cipriani/ZDNET

3. Repeat

Continue going through the list, looking at the apps that are taking up a lot of space, and clearing each one's cache. Or, if you really want to be thorough, you can go through and clear the cache of every app on your phone. But I recommend starting with the top culprits, like the Facebook app seen here in the screenshots.

How to clear Chrome's cache

1. Navigate to Chrome's History settings

Open the Chrome app on your Android phone or tablet, then tap on the three-dot menu icon in the top-right corner. Next, select History > Clear browsing data

Clearing browsing data for the Chrome browser
Screenshots by Jason Cipriani/ZDNET

2. Select which data you want removed

The following screen will show you a list of options; you can choose which data you want to remove from Chrome, and pick the time frame for which you want the data removed. Each data option has a brief description of what it means and what kind of impact it will have on your experience. 

For instance, clearing cookies and site data will sign you out of some (in my experience, all) websites. Clearing cached images and files may cause Chrome to take a bit longer the next time it has to load images for a site you frequent. 

Also: How to clear the Opera browser cache (and why you should)

Pick and choose which data you want to erase, and an amount of time, and tap the "Clear data" button at the bottom of the screen.


What is cached data?

When you're clearing cached data, be it for an app or from Chrome, you're really just removing various files and information that the app has downloaded. For an app like Facebook, cached data could be profile photos, pictures, videos, and similar content where the phone saves it to speed up scrolling through your timeline. 

In the words, while the files and data help with the overall experience, they aren't essential and can often become bloated, taking up too much storage. 

How often should I clear my Android device's cache?

That depends! If you're seeing a lot of performance issues, it should be something you do in a list of troubleshooting steps. Otherwise, maybe every quarter, or twice a year? It really just depends on how well your phone or tablet is running. 

Am I only gaining storage space by clearing the cache?

No. In fact, one of the first troubleshooting steps I follow when I encounter any weird bugs or issues in an app is to clear the cache. Oftentimes, files in the cache are corrupted or out-of-date, and forcing the app to build the cache all over again fixes that issue. It's a win-win.

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