From a Telecompaper Summary:
The amount of data traffic over mobile networks reached around 2,000 petabytes in the fourth quarter of 2013, an increase of 70 percent year-on-year and 15 percent more than in Q3 2013, according to Ericsson’s latest Mobility Report on market statistics.
…Mobile penetration to 92 percent of the world’s population.
In Q4 2013, 109 million new mobile subscriptions were added. Total mobile subscriptions up to, and including, Q4 2013 were around 6.7 billion. 40 million new LTE subscriptions were added during Q4 2013.
The report shows that close to 60% of all mobile phones sold in Q4 2013 were smartphones, compared to around 45 percent in Q4 2012. The report also shows that data traffic grew 70% between Q4 2012 and Q4 2013.
Access the Complete Report (February 2013)
4 pages; PDF