Samsung's DeX is a clever way to turn your phone into a desktop computer. However, there's one overriding problem: you probably don't have a good reason to use it instead of a PC. And Samsung is trying to fix that. It's unveiling Linux on Galaxy, an app-based offering that (surprise) lets you run Linux distributions on your phone. Ostensibly, it's aimed at developers who want to bring their work environment with them wherever they go. You could dock at a remote office knowing that your setup will be the same as usual.