Microsoft is expected to announce a major revamp of its phone software Monday, in an attempt to regain momentum in a crucial market where it’s been overshadowed. CEO Steve Ballmer will be speaking at Mobile World Congress in Barcelona, Spain, the world’s largest cellphone trade show, and analysts expect him to reveal Windows Mobile 7. The software could be in phones by late this year. The new software comes as Microsoft, dominant when smartphones were young, has taken a back seat to Research In Motion’s BlackBerry among corporate users and Apple’s iPhone among consumers.
