US average data rate dropped to 6.5Mbps from 9.6 megabits over last year T-Mobile had the best data rate at 11.2Mbps AT&T rated 8.9Mbps, Verizon 7.6Mbps, and Sprint 4.2Mbps By Mark Prigg UPDATED:          13:22 EST, 21 February 2014 4G data… Read More ›