Full form of GSM

What is the full form of GSM?


Answer :


  • Global System for Mobile

What does GSM mean?


GSM is a standard developed by the European Telecommunications Standard Institute ( ETSI ) to describe the protocols for second-generation cellular digital networks used by mobile devices for transmitting voices and data services. 

GSM was first defined in Finland in December 1991. After 2014, it has become the global standard for mobile communications operating in over 193 countries worldwide. 

GSM is a 2G cellular system cellular network that uses digital modulation and network-level architectures and services. It is the replacement for the first generation cellular networks. 

It provides subscribers with high quality digital wireless phone service and enhanced call security, privacy and clarity also data computing, and sending text messages.



GSM standards :



GSM standards operate on three different frequencies which are following below : 

  1. 900 MHz - Used by original GSM system 
  2. 1800 MHz - Used to support the growing number of subscribers
  3. 1900 MHz - Used mainly in the USA

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