Google’s Android operating system gave Linux-on-mobile sales a healthy boost in the fourth quarter of 2008. In its latest report on the state of smartphones, IT analysts Gartner said that Linux-based mobile sales increased from 2.7 million units in the fourth quarter of 2007 to 3.2 million units at the end of 2008. This was despite a general slowdown in growth for the entire smartphone sector over the same period.