4G is 1Gbps standing 100mbps moving....we are a long ways from 4G we are between 3G and 4G. Sprint in Wilmington is 6.5Mbps down and 1-1.5Mbps up and Chicago can range from 3Mbps-6.5Mbps down and 1-1.5Mbps up but I live outside of "4G" range :/ sprints 3G can range from 3KBps to 300KBps down and 5-80KBps up. They have an awesome 3G network when your in an area that has been upgraded and is not bogged down. Jacksonville NC got 200-300KBps down and 60-80KBps up after they upgraded some of the network but after a while it started to slow from 100-300KBps and 40-80KBps Chicago 3G is horrible. i get 5KBps on and off...I can't even get a constant 56k speed because it is so overloaded.