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The intertwining of telecom, banking, and M2M/IoT produces a new degree of complexity. We hope our COMPRION glossary helps you to get a good overview of all the connected terms, technologies, and concepts.
A SIM circuit is embedded into a removable plastic card. This plastic card is called ’SIM card’ and can be transferred between different mobile devices. A SIM card follows certain smart card standards. SIM cards were first made the same size as a credit card (85.60 mm × 53.98 mm × 0.76 mm = 1FF (1st form factor)). The development of physically smaller mobile devices prompted the development of smaller SIM cards where the quantity of card surrounding the integrated circuit is reduced. As the SIM used to be the dominating application on these types of smart cards, even nowadays, the card (hardware) itself is often called SIM, too.
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