what is full form of sim and whose invent sim card
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Subscriber Identification Module (Sim) is a small chip that is used in mobile phones to connect to the world. Mobile Phone SIM cards were invented in the year 1991 by Munich Smart Card Maker Giesecke and Devrient. This invention of SIM Card enabled the whole world to connect and communicate with each other.
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SIM: Subscriber Identity Module or Subscriber Identification Module
The first SIM card was made by Munich smart card maker Giesecke and Devrient in 1991. The SIM was initially specified by European Telecommunication Standards Institute.
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