Users expect websites to work on their mobile phones. In two to three years, mobile support will become standard for any site. Web developers must add mobile web development to their skill set or risk losing clients. How do you make websites mobile compatible? The simple answer is to test on all mobile devices and fix any problems you encounter. But with at least ten operating systems and fifteen browsers out there, it is impossible to do that. Nor can we test only in iPhone and Android and expect to serve our market. PPK surveys the mobile web market, as well as phone platforms and their browsers, and shows how to set up a mobile test bed that works.