No original content here, but I wanted to draw your attention to this Pew Internet Survey about who is using the mobile web. From the New York Times, “The study found that African-Americans and Hispanics continue to be more likely to own cellphones than whites and more likely to use their phones for a greater range of activities.” 

The Pew Report states, “African-Americans and English-speaking Latinos continue to be among the most active users of the mobile web. Cell phone ownership is higher among African-Americans and Latinos than among whites (87% vs. 80%) and minority cell phone owners take advantage of a much greater range of their phones’ features compared with white mobile phone users. In total, 64% of African-Americans access the internet from a laptop or mobile phone, a seven-point increase from the 57% who did so at a similar point in 2009.”