A new forecast from Zenith, a global media agency, predicts that mobile devices will account for 75% of global internet use next year. It was 40% in 2012. Not that you really doubted mobile was important, but this makes it all the more urgent to be able to identify consumers across mobile devices and apps. , according to Zenith’s new Mobile Advertising Forecasts, published today. The mobile proportion of internet use has increased rapidly, from 40% in 2012 to 68% in 2016, and we forecast it to reach 79% by 2018.