What is 2G, 3G, 4G or 5G?

This is a question I get asked a lot. What is 2G, 3G, 4G or 5G?

Simply put,  The G here stands for generation. The higher the generation, the higher the upload/download speed.

For example, here are the generations of GSM network standard (see definition below of GSM). They are GSM (2G, 2.75G), WCDMA (3G), HSDPA (3.5G), HSUPA (3.75G), LTE (4G, including FDD-LTE, TD-LTE), The G here stands for generation. The higher the generation, the higher the upload/download speed.

GSM is the full name is Global System for Mobile Communication. It’s a digital mobile communication system widely used in Europe and other parts of the world. It is the most widely used of the three digital wireless telephone technologies (TDMA, GSM, and CDMA).

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