![]() eSIM is replacing physical SIM cards in some domains, including cellular telephony. SIMs are transferable between different mobile devices by removing the card itself. The first SIM cards were the size of credit and bank cards sizes were reduced several times over the years, usually keeping electrical contacts the same, so that a larger card could be cut down to a smaller size. SIM cards can also be used in satellite phones, smart watches, computers, or cameras. SIMs are always used on GSM phones for CDMA phones, they are needed only for LTE-capable handsets. It is also possible to store contact information on many SIM cards. ![]() In Europe, the serial SIM number (SSN) is also sometimes accompanied by an international article number (IAN) or a European article number (EAN) required when registering online for the subscription of a prepaid card. In practice the term "SIM card" refers to the entire unit and not simply the IC.Ī SIM contains a unique serial number, integrated circuit card identification (ICCID), international mobile subscriber identity (IMSI) number, security authentication and ciphering information, temporary information related to the local network, a list of the services the user has access to, and four passwords: a personal identification number (PIN) for ordinary use, and a personal unblocking key (PUK) for PIN unlocking as well as a second pair (called PIN2 and PUK2 respectively) which are used for managing fixed dialing number and some other functionality. 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 typical SIM card (mini-SIM with micro-SIM cutout) A smart card taken from a GSM mobile phone T-Mobile nano-SIM card with NFC capabilities in the SIM tray of an iPhone 6s 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 securely store an 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). For the company, see MicroSim Corporation.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |