David, Joanna and Christopher each bring their favorite new thing from this year's Mobile World Congress, the annual showcase of all things smartphone. Then WSJ reporter Sam Schechner comes on to discuss his investigation into apps that share sensitive data-everything from your diet to your pregnancy status-with Facebook, and what those companies do with all that data. Later, Qualcomm President Cristiano Amon talks about the 5G future, and what all this new and confusing technical jargon might actually mean for our lives.