Mobile device OS shares: Symbian - 55.9%, Windows - 12.7%, Linux - 11.3%

According to IDC, Symbian dominates the converged mobile device operating system market with a 55.9% share in 2004. Symbian's share of this market is expected to grow to nearly 60% in 2009. Microsoft Windows Mobile platforms had 12.7% of the market in 2004, with continued growth to 17.3% of the market in 2009. Linux had an 11.3% share in 2004 and is expected to capture nearly 17% of the market in 2009.