Why Do We Need a 4G Router?   The rapid development of wireless mobile communications has multiplied over the past 30 years, from 1G today to 4G LTE. So what are the advantages of 4G LTE over its predecessors? 1. Faster download speeds: using the Cat 4 device, 4G networks can provide ultra-fast data speeds, with theoretical rates of 150Mbps. Cat 6 devices can theoretically reach 300Mbps....