The smartphone OS wars continue to rage, with new kids on the block upping their game to further erode the market share of their longer-toothed rivals.
Apple's iPhone OS and Google's Android open mobile platform grew the most last year, according to analyst house Gartner, with number-one smartphone OS Symbian shrinking further.
Symbian lost 5.5 percentage points to end last year with 46.9 percent market share, versus 52.4 percent in 2008. Meanwhile Microsoft's Windows Mobile platform also lost out, shrinking by 3.1 percentage points to end 2009 in fourth place with 8.7 percent market share.
For more on this story, see iPhone, Android fastest growing in smartphone OS wars on silicon.com.