DALLAS--(BUSINESS WIRE)--AT&T1 today named F. Thaddeus Arroyo to lead Iusacell as its Chief Executive Officer. Arroyo, a 19-year AT&T veteran, will lead a Mexico City-based team dedicated to a successful transition for Iusacell customers and employees. “We’ll begin work immediately to bring more wireless competition and improved mobile Internet service to Mexico,” said Arroyo. “We’re also excited to begin working on our plans to create the first-ever North American Mobile Service area c