Vodafone Group Interim Management Statement for the Quarter ended 30 June 2013 reported that mobile data usage increased 60% over June 2012, and that the average smartphone consumed twice as as much data on 4G versus 3G.  To keep current on the changing mobile data landscape, check out the Bytemobile twitter feed.

Vodafone Group  Data traffic increased by 60% annually by June 2013

Vodafone Group Data traffic increased by 60% annually by June 2013