A 3G WI-Fi router has all the landscapes of a standard Wi-Fi router but the difference is that it doesn't require an Ethernet cable. It runs with the help of a 3G signal from cellular networks, in the same manner in which the smartphones work. The main benefit of these routers is mobility; you can stay connected wherever you find a 3G signal. Another important feature of the router is that it has a comparatively long battery life. In addition to this salient feature, its installation process is really very easy and fast. It offers continuous surfing for at-least 4 hours.A 3G Wi-Fi router is a reasonable solution for all of you who like high speed internet on the go.TP-LINK is one popular 3G Wi-Fi router manufacturer in India.