This document discusses trends in mobile media usage among millennials in the United States. It provides statistics showing growth in mobile usage from 2010 to 2013. Graphics show time spent on mobile media surpassing other forms of media like TV and online. The document then covers trends in mobile advertising including the use of HTML5 for rich media ads, video ads on multiple screens, and greater integration of social features into mobile apps and campaigns. Specific examples are given of rich media and social mobile ads.