Yet another real-world usage study has emerged that would seem to contradict data based on shipments of smartphones. In a report issued by web video network provider Ooyala, iOS users account for two-thirds (67 percent) of mobile traffic for watching videos on smartphones, with Android devices making up only one-third (33 percent). This comes in seeming defiance of statistics from IDC that say Android devices have 68 percent share of smartphone shipments, with iOS only 19 percent of the market.