Microsoft will increase its focus on making mobile phones part of its strategy to spread IT to people in developing nations, based partly on a prototype already developed for the purpose called Fone+ .

A day after Comcast and Time Warner Cable announced investments in a WiMax joint venture spearheaded by Sprint and Clearwire, Cablevision said it would build its own wireless broadband network, using Wi-Fi.

Only hours after posting information that indicated iPhone owners would receive free access to AT&T's public wireless hotspots, the company pulled all references to the service from its Web site.