The difference between 3G and 4G network areg is much faster compared to 3G. They are also from different "generations." 3G is called the third generation and 4G is called the fourth generation. Verizon Wireless phone company is a carrier of 4G. T-Mobile and AT&T are also carriers. Some companies will say they carry 4G network but they really dont. Those companies are LTE, Wilmax, and UMB.
Source: http://www.differencebetween.net/technology/difference-between-3g-and-4g
Author: Unknown