<P> GSM ( Global System for Mobile Communications , originally Groupe Spécial Mobile ) is a standard developed by the European Telecommunications Standards Institute ( ETSI ) to describe the protocols for second - generation digital cellular networks used by mobile devices such as mobile phones , first deployed in Finland in December 1991 . As of 2014 , it has become the global standard for mobile communications -- with over 90 % market share , operating in over 219 countries and territories . </P>
<P> GSM ( Global System for Mobile Communications , originally Groupe Spécial Mobile ) is a standard developed by the European Telecommunications Standards Institute ( ETSI ) to describe the protocols for second - generation digital cellular networks used by mobile devices such as mobile phones , first deployed in Finland in December 1991 . As of 2014 , it has become the global standard for mobile communications -- with over 90 % market share , operating in over 219 countries and territories . </P>
what is the meaning of g s m
what is the meaning of g s m
Global System for Mobile Communications
Global System for Mobile Communications