AT&T Invests Nearly $20 Million In South Dakota Wireless And Wireline Networks In First Half Of 2013

PIERRE, S.D., Aug. 8, 2013 /PRNewswire/ -- Blazing speeds.  Great reliability.  Broad coverage.  Excellent overall performance.  That's what South Dakota residents want from their mobile Internet, and it's exactly what AT&T* is delivering with an array of...