Data traffic on smartphones and tablets will approach 197,000 Petabytes by 2019. However, it is estimated that only 41% of this mobile data traffic will be carried over cellular networks, with the rest being offloaded to Wi-Fi networks. Media consumption by mobile users will continue to rise, bolstered by the rise in 4G adoption and factors such as HD video usage. Video traffic, for instance, is expected to grow by 8 times between 2015 and 2019.