Clearing cache may not be advisable for all purposes, but sometimes it's just what your phone needs to work properly again ...

Do you experience an app that won’t open on your android phone or android device? Several factors can cause this issue such as a glitch on the app, an outdated app, outdated android system, or ...

A lot of files build up in the cookies and cache of your web browser, and you probably don't need them.

Is WhatsApp crashing, taking longer than usual to open chats, or having trouble loading media files even on a stable internet connection? It's possible it could benefit from clearing the app's cache.