3G

3G is a group of third era mobile information applied sciences. The first era (1G) was launched in 1982, whereas the second era of mobile information applied sciences (2G) grew to become standardized within the early Nineties. 3G applied sciences had been launched as early as 2001, however didn’t achieve widespread use till 2007.

In order to be labeled “3G,” a mobile information switch normal should meet a set of specs outlined by the International Telecommunications Union, often called IMT-2000. For instance, all 3G requirements should present a peak information switch price of at the least 2 Mbps. Most 3G requirements, nonetheless, present a lot quicker switch charges of as much as 14.4 Mbps.

While many cellular phone firms market telephones with “3G technology,” there isn’t a single 3G normal. Rather, totally different firms use their very own applied sciences to attain comparable information switch charges. For instance, AT&T makes use of a 3G expertise based mostly on GSM, whereas Verizon makes use of a expertise based mostly on CDMA. Additionally, cellular phone networks exterior the United States use totally different IMT-2000 compliant requirements to attain 3G information switch speeds.

3G precedes 4G, the fourth era of mobile information applied sciences.