Mobile video viewing experienced significant gains last year, growing from just 2% of online videos watched in 2011 to 12% in 2012 - and the majority of it is on iOS devices. 60% of all mobile video viewing is done on iOS devices, according to a study by video monetization company Freewheel (via TechCrunch). Android devices accounted for most of the rest, at 32%. The iPhone alone accounted for 30% of all mobile video, the iPad for 24% and the iPod touch for 6%. Apple's lead over Android increased substantially in the final quarte