What is the full form of GSM

GSM: Global System for Mobile communication

GSM stands for Global System for Mobile communication. It is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation (2G) digital cellular networks used by mobile devices such as mobile phones and tablets.

It was first deployed in Finland in December 1991. By the mid-2010s, it became a global standard for mobile communications achieving over 90% market share, and operating in over 193 countries and territories.

GSM is an open, digital cellular radio network operating in over 200 countries worldwide. It is not only used for voice calls, it can also be used for data computing and sending text messages.