Since each app that you've installed on your smartphone creates its own cache data, you'll have to go through each app one by one to clear its respective cache data. That's the official way ...

This quick change could make your device feel instantly faster and more responsive, no matter what make or model you're using.

If your phone is running slower than you think it should, try clearing out the cache on your browser or most-used apps to bring it back up to speed.