Mobile World Live‘s US editor Martha DeGrasse has all the action from the opening day of the return of MWC Los Angeles. Keynote highlights include Stephanie Lynch-Habib and Mats Granryd of GSMA; Neville Ray, President, Technology, T-Mobile; Rakuten Symphony CEO Tareq Amin; Meredith Attwell Baker, President & CEO, CTIA; AT&T’s David Christopher and Sampath Sowmyanarayan, Chief Revenue Officer, Verizon Business.