GSM means Global System for Mobile communication
The abbreviation GSM is an international standard for the use of mobile networks. It originated in the years 80 of the last century when a European working group began drafting a standard. Previously, the abbreviation was: Groupe Special Mobile, but in 1993 there were more than 36 different GSM networks, and the abbreviation was adjusted. GSM is also known as the 2nd generation mobile telephony, also known as 2g. The largest counterpart of the GSM network is CdmaOne, which is used in America.
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