Telefónica, Portugal Telecom to overlay GSM on CDMA networks in Brazil By Reily Gregson June 6, 2002 Archived ArticlesCarriers FacebookTwitterLinkedin S FacebookTwitterLinkedin Previous articleInet wins Philippine contractNext articleCTIA show moves up in trade show ranking AnatelCarriersCDMAGSMAHandsetsoperator ABOUT AUTHOR Reily Gregson RELATED POSTS 5G China reaches nearly 4.4 million 5G base stations Juan Pedro Tomás - April 28, 2025 5G Shanghai achieves full 5G metro coverage Juan Pedro Tomás - April 16, 2025 5G China to see huge economic impact of 5G, AI by 2030: GSMA Juan Pedro Tomás - April 11, 2025