(Telecompaper) Nearly half of all internet traffic will come from smartphones in five years, but the majority of the traffic will still run over fixed networks, according to the latest forecasts from Cisco. The company's latest Visual Networking Index estimates that 60 percent of traffic from mobile devices was offloaded to fixed networks in 2016, and this will still be around 63 percent in 2021, at the end of its five-year forecast period. Smartphones accounted for 16 percent of total global IP traffic last year, and Cisco expects this will grow to a 48 percent share in 2021, making smartphones the biggest source of internet traffic, more than PCs.