Safari is the default browser on iPhones and you can clear your Safari cache in a few short steps. Starting with iOS 11, following this process will affect all devices signed in to your iCloud account ...

You can clear Internet Explorer's cache, found in your Internet Options under the Tools menu, to improve browser performance.

You can clear all the cache, or just some of it, on your Google Chrome desktop browser or mobile app via the "More" icon.

Much as with Google Chrome, you can clear the cache from within the Mozilla Firefox Android app. To access this function, tap the More button on the right of the address bar, again symbolized by three ...