3G / 3.5G (third generation) or HSPA (High Speed Packet Access) is a mobile telephone protocol designed to transfer data using a mobile phone.
As its name suggests, 3G follows 1G and 2G wireless communications, enabling faster data-transmission speeds, greater network capacity and more advanced network services.
1G kicked off with over sized analogue mobile phones in the 80s and then was superseded by 2G mobile technology which ran voice transmissions over a digital network. The birth of 3G technologies introduced voice and high speed data transmissions, providing users the freedom to stay connected to wireless high-speed Internet on the go.
Whilst 3G is generally associated with a cellular phone, it is also applicable to portable high speed wireless devices such as PCMCIAs, PC Express Cards, USB modems and 3G routers; allowing multiple users to enjoy wireless broadband high speed Internet using the one 3G connection.