![]() ![]() 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. A TracFone Wireless SIM card has no distinctive carrier markings and is only marked as a "SIM card"Ī SIM card (full form: Subscriber Identity Module or Subscriber Identification Module) is an integrated circuit (IC) intended to store securely the international mobile subscriber identity (IMSI) number and its related key, which are used to identify and authenticate subscribers on mobile telephony devices (such as mobile phones and laptops).
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