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2. SIM card - Wikipedia

   en.wikipedia.org/wiki/SIM_card

   A typical SIM card (mini-SIM with micro-SIM cutout) T-Mobile nano-SIM card with NFC capabilities in the SIM tray of an iPhone 6s cell phone A SIM (Subscriber Identity Module) card 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 telephone ...

3. eSIM - Wikipedia

   en.wikipedia.org/wiki/ESIM

   An eSIM (embedded SIM) is a form of SIM card that is embedded directly into a device. Instead of an integrated circuit located on a removable SIM card, typically made of PVC, an eSIM consists of software installed onto an eUICC chip permanently attached to a device. If the eSIM is eUICC-compatible, it can be re-programmed with new SIM ...

4. SIM Application Toolkit - Wikipedia

   en.wikipedia.org/wiki/SIM_Application_Toolkit

   SIM Application Toolkit. SIM Application Toolkit (STK) is a standard of the GSM system which enables the subscriber identity module (SIM card) to initiate actions which can be used for various value-added services. [1] Similar standards exist for other network and card systems, with the USIM Application Toolkit (USAT) for USIMs used by newer ...

5. Simjacker - Wikipedia

   en.wikipedia.org/wiki/Simjacker

   Simjacker is a cellular software exploit for SIM cards discovered by AdaptiveMobile Security. [1] 29 countries are vulnerable according to ZDNet. [2]The vulnerability has been exploited primarily in Mexico, but also Colombia and Peru, according to the Wall Street Journal, [3] where it was used to track the location of mobile phone users without their knowledge.

6. Type Allocation Code - Wikipedia

   en.wikipedia.org/wiki/Type_Allocation_Code

   The Type Allocation Code (TAC) is the initial eight- digit portion of the 15-digit IMEI and 16-digit IMEISV codes used to uniquely identify wireless devices. The Type Allocation Code identifies a particular model (and often revision) of wireless telephone for use on a GSM, UMTS, LTE, 5G NR, iDEN, Iridium or other IMEI-employing wireless network ...

7. OneSimCard - Wikipedia

   en.wikipedia.org/wiki/OneSimCard

   OneSimCard offers free incoming calls in over 160 countries, outgoing calls from 25 cents per minute and data service from 10 cents/MB. [7] [8] The SIM card is compatible with unlocked GSM phones and the main phone number, once the SIM card is inserted, is based in the EU. [9]