Research firm Kantar Worldpanel has released a new report (via The Next Web) highlighting global smartphone sales over the October-December period, finding that while Apple held strong in key markets such as the U.S. and China, Google's Android devices increased their lead over other platforms during the end of 2013, registering year-over-year growth in various major markets. Dominic Sunnebo, strategic insight director at Kantar Worldpanel ComTech, comments: “Android finished 2013 strongly, showing year-on-year share growth across