AT&T just changed a key leader with its crucial 5G effort

AT&T (NYSE: T) has changed a key leadership role within it crucial 5G efforts.Jeff McElfresh, a veteran of the company, is replacing long-time employee Melissa Arnoldi, who had held the leadership position at AT&T’s technology and operations division.
With the change, Arnoldi is taking over as CEO of Vrio, AT&T's DirecTV Latin America operations. That was the same position that McElfresh held, making the moves a switch at the Dallas headquarters. McElfresh now reports to John D