Sim-card meaning

sim
A small electronic card containing an integrated circuit, inserted in a GSM cell phone, that stores data identifying the user and allows connection to a cellular network.
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(Subscriber Identity Module card) A smart card that gives a cellphone its phone number and customer identity. Introduced in 1991 for GSM phones, most cards are removable. Satellite and LTE phones also use SIM cards. Activated by the cellular carrier, the SIM card contains a unique ID, authentication codes, network-specific data and the customer's phone contacts. See IMSI.As long as users stay with the same carrier, they can generally switch their phone number and calling plan to a different phone by moving the SIM card. For travelers, prepaid SIM cards are available for unlocked phones, and phones that hold more than one SIM are also offered (see multi-SIM). In the early 1990s when cellphones were large, the first SIMs were the size of a credit card (1FF). See eSIM, SIM lock, R-UIM and smart card.Size Thick Form SIM Card (mm) (mm) Factor Full Size 86x54 .76 1FF Mini (Standard) 25x15 .76 2FF Micro 15x12 .76 3FF Nano 12x9 .67 4FF Embedded 6x9 up to 1
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A small, removable card smaller than a credit card which stores mobile phone data such as contact names and numbers, SMSs and security information.
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Origin of sim-card

  • SIM (i.e. Subscriber Identity Module) + card
    From Wiktionary