The research agency Gartner estimates that in 2013 were sold in the world of tablets 195.4 million, an increase of as much as 68% on 2012 despite positive. In 2013 61.9% of the tablets had the Android system, while in 2012 this percentage was 45.8%. The system iOS, which in 2012 was 52.8%, fell in 2013 to 36.0. Microsoft rose 2.1% against the previous 1.0%. The other systems, present in the past with small percentages, are now virtually disappeared from the market, which has become increasingly the preserve of the two main systems.
