AT&T's Network Has Fastest 4G LTE Speeds

NASHVILLE, Tenn., March 12, 2013 /PRNewswire/ -- AT&T* wireless customers in the carrier's 4G LTE markets** have access to the fastest mobile Internet speeds on their smartphones. (Logo: http://photos.prnewswire.com/prnh/20120612/DA23287LOGO) How fast? RootMetrics®, an...