Who owns the cell phone market?

Hey all,

I recently created a social networking site where friends/family can share cell phone numbers (babyphonedirectory.com). I want to make an app for the site to make the service more widely available. The problem is there are so many different cell phones and cell phone OSes that I can't develope for all of them.

Who owns a majority share of the market? Android? IPhone? Windows Mobile? Who do you see as future winners?

Thanks!

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I would just google it. someone probably already has the answer