International Telecommunication Union's (ITU) defines 4G as a connection capable of 100Mbps with high mobility (wherever you go) and up to 1Gbps with low mobility (Wi-Fi range). (3G speeds jumped around in the 500kbps to the 2Mbps range)
Via: Lifehacker http://bit.ly/eor1ir
Via: Lifehacker http://bit.ly/eor1ir