Microsoft did not realize how different smartphones are from PCs until recent software updates broke new Windows Phone 7 devices that were already in the hands of cell phone users, Windows Phone Vice President Joe Belfiore explained Wednesday in a keynote address at the MIX11 conference.
Microsoft has years of experience rolling out Windows software updates to computers made by HP and Dell, but devices built by phone manufacturers and sold by cellular carriers turn out to have some key differences, Belfiore said.
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