Information from Consumers covet 4G, the tech no one understands by Christina Bonnington from Wired.com/Cnn.com
The Difference of 4G and 3G is that 4G is much faster than 3G. If you are in an area with little to no coverage, it can affect the speed of both 3G and 4G.The main carriers that offer 4G are AT&T, Sprint, Verizon and T-Mobile but, Not all areas are covered by all of these carriers. Plus watch out for carriers that say and advertise 4G phones but don't actually offer it. Some carriers will have 4G capable phones or 4G-like speed but don't actually offer 4G.