Explosion in smart phone sales in Europe last year. In 2011, demand for mobile phones once again increased in Europe, largely as a result of the rising popularity of smart phones, according to a survey by GfK consultants. More than one in three mobile phones purchased are smart phones. Last year, 258 million handsets were bought by European consumers, a 3.2% increase on 2010. The smart phone subsector rose dramatically last year by rate of 67%. In 2010, smart phones only constituted 22% of...