4G is actually a collection of fourth-generation cellular data technologies.
It also succeeds in Technology 3G and it ” IMT-Advanced is called,” or “International Mobile Telecommunications Advanced”.
4G became available for use by people in early 2005, that too in South Korea at that time it was called WiMAX . Then in the next few years, it was released in many European countries.
At the same time it became available in the United States in 2009, where Sprint became the first cellular network to offer 4G cellular network.
All 4G standards must confirm that they follow a set of specifications that are made by the International Telecommunications Union .
For example, the peak data transfer rates of all 4G technologies should be more than at least 100 Mbps . The actual download and upload speeds can vary depending on signal strength and wireless interference. It has been found that 4G data transfer rates can really surpass the speed of cable modem and DSL connections easily.
Like 3G, 4G also does not have a single standard. Rather, different cellular providers use different technologies to conform to their 4G requirements.
For example, WiMAX is a very popular 4G technology that is used in Asia and Eastern Europe, while LTE (Long Term Evolution) is very popular in Scandinavia and United States.