Reports of the death of the PC have been greatly exaggerated, but rapid adoption of mobile devices is changing how, when, where and why consumers access the internet. Over the next few years, we forecast that PC user growth will be limited to population growth, smartphone penetration will rise from two thirds currently to over 80% by 2020, and tablet users will converge to the same level as the PC audience. In addition, we project that overall internet consumption will nearly double by 2020, with PC-based usage declining before levelling out, and smartphone and tablet use increasing threefold. Of the traditional media sectors, we expect print media to be the most negatively affected by the rise of the mobile internet, with less impact on radio and TV viewing and advertising likely to be relatively resilient.