Vanguard Cellular Systems, Inc. was a mobile phone carrier with headquarters in Greensboro, North Carolina. It was the largest independent non-wireline cellular carrier in the 1990s. It was acquired by AT&T in 1999.
Vanguard Cellular Systems, Inc. was a mobile phone carrier with headquarters in Greensboro, North Carolina. It was the largest independent non-wireline cellular carrier in the 1990s. It was acquired by AT&T in 1999. (en)
Vanguard Cellular Systems, Inc. was a mobile phone carrier with headquarters in Greensboro, North Carolina. It was the largest independent non-wireline cellular carrier in the 1990s. It was acquired by AT&T in 1999. (en)