SIM card
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A SIM card or SIM is a type of integrated circuit, often in the form of a smart card. They are intended to securely store an international mobile subscriber identity number and its related key, which
4-by-4-millimetre (0.16 in × 0.16 in) silicon chip in a SIM card which has been peeled open. Note the thin gold bonding wires, and the regular, rectangular digital memory areas.
The memory chip from a micro-SIM card without the plastic backing plate, next to a US dime, which is approx. 18 mm in diameter
X-ray image of a mini-SIM, showing the chip and connections
Embedded SIM from M2M supplier Eseye with an adapter board for evaluation in a mini-SIM socket
The universal integrated circuit card is the physical smart card used in mobile terminals in 2G, 3G, 4G, and 5G networks. The UICC ensures the integrity and security of all kinds of personal data, and
SIM card
…devices. SIMs are transferable between different mobile devices by removing the card itself. Technically, the actual physical card is known as a universal integrated circuit card (UICC); this smart card is usually made of PVC with embedded contacts and semiconductors, with the SIM as its primary component. In practice the term…
X-Ray of a SIM card showing small rectangular semiconductor chip (central small rectangle) and five bond wires leading to the connection pads. This can also be seen by peeling off the UICC from an old credit or debit card, as those are single-sided.
A 25 × 15 mm Vodafone New Zealand SIM card