Cached files are temporary data an app on your phone saves to make using the app easier. This could be login information, your favorite playlists, and other saved default info. Along the same lines are cookies, which are saved browsing information that makes using the browser on your phone easier. You might want to occasionally clear the phone’s app cache and cookies to save space, speed up the device, and troubleshoot. Here’s how to clear the cache and cookies on Android.
Read more: How to clear the cache on any platform