Microsoft CEO Satya Nadella holds up the Nokia Lumia 930 phone that uses Windows 8.1 during the keynote address of the Build Conference Wednesday, April 2, 2014, in San Francisco. Microsoft kicked off its annual conference for software developers, with new updates to the Windows 8 operating system and upcoming features for Windows Phone and Xbox. (AP Photo/Eric Risberg) ORG XMIT: CAER121