The next billion people will come to the Web via connected mobile devices. Currently, many of these devices are humble dumb clients, but the iPhone, Google, and Nokia are bringing smarter clients to the masses with open platforms. How will these mini-computers change our lives? How will these jumbo-sized sensors benefit us? Will we be able to use the third screen to view an augmented world? What data will be collected and who will have access to it? Is the Web ready for the Next Billion? What will their web apps look like?