Exhibit 4.3 FIRST AMENDMENT AND WAIVER dated as of December 7, 2001 (this "Amendment"), to the Amended and Restated Credit Agreement dated as of July 25, 1997, as amended and restated as of March 29, 2001 (the "Credit Agreement"), among GRUPO IUSACELL...Credit Agreement • June 28th, 2002 • Grupo Iusacell Sa De Cv • Telephone communications (no radiotelephone) • New York
