What does the abbreviation SIM stand for?


Quick Answer

SIM stands for "subscriber identity module." SIM cards are used in all mobile phones, and they allow a network to recognize phones that have subscriptions to that network. SIM cards allow users to transfer their personal information from one phone to another.

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What does the abbreviation SIM stand for?
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Full Answer

SIM cards are composed of plastic and a circuit. The first versions of SIM cards were the size of a credit card; however, they are now considerably smaller. The amount of data that SIM cards can hold varies, but it generally ranges from 32 to 128 kilobytes. It is possible to permanently disable a SIM card by entering the personal unlock key code incorrectly too many times.

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