3G is actually a collection of third-generation cellular data technologies. It is an Upgrade of 2G and 2.5G GPRS network.
Where the first generation (1G) was introduced in 1982, the second-generation cellular data technologies (2G) became standardized in the early 1990s. Only after this 3G technologies were introduced in early 2001, but it could not be so popular at that time but in the year 2007, it became famous among the people.
A product will only have a ” 3G ” stamp when a cellular data transfer standard meets certain set of specifications that have been defined by the International Telecommunications Union , called IMT-2000 .
For example, all 3G standards must have at least a peak data transfer rate of at least 2 Mbps. But in most 3G standards, even higher transfer speed was found to be around 14.4 Mbps or more.
There are many cell phone companies that market their phones by saying ” 3G technology “, but there is no single 3G standard among them. At the same time, different companies use their own technologies to achieve similar data transfer rates.
For example, AT&T uses a 3G technology that is based on GSM, while Verizon uses a technology that is based on CDMA . In addition to cellphone networks that are outside of the United States that use different IMT-2000 compliant standards to achieve 3G data transfer speeds.