An aggressive estimate by iSuppli today has Android passing iOS for share by 2012. While Apple still has a comfortable total user base today, Google is accelerating quickly enough that it could claim 75 million active phones by 2012 where Apple would grow to just 62 million. That ratio could widen further in the following two years to where Android would have 22.8 percent share, at over 100 million phones, where iPhones and related devices would shrink in relative share to 15.3 percent.
