2G, 3G and 4G/LTE represent the evolution of mobile networks. We are all using mobile internet on daily basis and are well aware of the disturbing problem regarding the network coverage and data transfer speed, especially at crowded events or indoors. Even today we still have areas where only GPRS, EDGE or 3G coverage is available. If you are used to the 4G/LTE network, older generations feel painfully slow. But, all of this is about to change in the near future when 5G will be launched.