Most apps use 3rd-party libraries and servers to show those ads, so they can be blocked at the network connection level (e.g. the hosts file) if you have control over your phone&#x27;s OS. Having Android helps with that.<p>The apps need to handle it gracefully because they can&#x27;t tell whether the ad server is legitimately down or just blocked. I&#x27;ve never had an app work any worse with blocked ads.