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SIM Card (Subscriber Identity Module) is a smart card. Usually it is used to store access data to mobile telecommunications, phone book, messages received and Interact with the services network through the service menu of the telecommunication company, in addition to being responsible for security of authentication and scrambling, etc. SIM Cards can be customized with different standards of mobile technologies; however, the best known is the GSM technology (Global System for Mobile Communications).
SIM Card is made with several types of plastic, with thermal and mechanical features, with a unique ID, some sort of chassis marking that identifies it. Internationally known as ICCID (International Circuit Card), this number is unique in the entire world.
Valid NFC SIM Cards are compliant with the most recent technology standards and with main international rules that govern telecommunications and payments industries.