10% is consistent with the market share numbers reported in the article: > Microsoft’s share of the smartphone operating-system market declined to 2.8 percent

10% is consistent with the market share numbers reported in the article: > Microsoft’s share of the smartphone operating-system market declined to 2.8 percent [...] Android’s share increased to 25.5 percent [...] Assuming that Windows Mobile 6.5- numbers are negligible by now.