From the roots of analog based first generation service (1G) to today’s truly broadband-ready LTE...
Source: http://www.phonearena.com/news/1G-2G-3G-4G-The-evolution-of-wireless-generations_id46952
Source: http://www.phonearena.com/news/1G-2G-3G-4G-The-evolution-of-wireless-generations_id46952