There are now 4.5bn mobile subscribers in the world, according to the latest edition of Ericsson’s well-respected Mobility Report. It has lots of stats on mobile trends, including the fact that those 4.5bn people had 6.6bn mobile subscriptions in the third quarter of this year (due to owning multiple devices); that smartphones accounted for 55% of all mobile phones sold in the third quarter; and that there will be 2bn mobile broadband subscriptions by the end of this year. More stats? 113m net new mobile subscriptions were added globally in Q3, with China accounting for 30m of them, and India another 10m. On the futuregazing side, Ericsson reckons there’ll be 8bn mobile broadband subscribers by 2019, quadruple the current total. Of those, 2.6bn will be accessing the internet from their mobile devices at LTE (i.e. 4G) speeds. Between Q3 2012 and Q3 this year, mobile data traffic grew by 80%, but it’s expected to grow by another 10x between 2013 and 2019, with more than 50% of that traffic expected to come from video by 2019.