Mobile data traffic is growing rapidly and will continue to do so in the coming years. By 2015, global mobile data traffic will increase 26-fold from 2010 levels and two-thirds of mobile data traffic will be from video. There will also be 788 million mobile-only internet users by 2015. Tablets are contributing significantly to this growth, with each tablet generating 5 times more data traffic than the average smartphone in 2010. Mobile constraints require web designers to focus on creating content that is focused, fast and frequently used on small screens.