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2. SIM card - Wikipedia

   en.wikipedia.org/wiki/SIM_card

   A typical SIM card (mini-SIM with micro-SIM cutout) 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 devices (such as mobile phones and laptops).

3. Samsung Galaxy Tab 7.0 - Wikipedia

   en.wikipedia.org/wiki/Samsung_Galaxy_Tab_7.0

   The GSM variants of the Galaxy Tab have an externally accessible SIM card slot. If the SIM card is removed while the system is on, the system automatically reboots. The AT&T and T-Mobile variants of the Galaxy Tab ship with a micro SIM in a micro SIM adapter. For non-US Galaxy Tabs, with phone function, this slot can also accommodate a 3G data ...

4. Samsung Infuse 4G - Wikipedia

   en.wikipedia.org/wiki/Samsung_Infuse_4G

   There are three versions of the Samsung Infuse 4G. The first to be released is AT&T's Infuse which is SIM locked. The second is with the Canadian Rogers network, and the third model is intended for China Telecom. The Infuse can be unlocked in a matter of minutes with third party tools.

5. List of mobile network operators in the United States

   en.wikipedia.org/wiki/List_of_mobile_network...

   Acquired by Verizon Wireless and AT&T Mobility. [39] AT&T Wireless Services: GSM: EDGE: 22: October 2004: Acquired by Cingular Wireless, which later rebranded to AT&T Mobility. [40] Big Sky Mobile: GSM: EDGE: Unknown: 2017: Sold spectrum licenses to AT&T and T-Mobile and exited the business. [41] Blaze Wireless: GSM, UMTS: EDGE, HSPA+, LTE ...

6. List of mobile virtual network operators in the United States

   en.wikipedia.org/wiki/List_of_mobile_virtual...

   Mobile virtual network operators (MVNOs) in the United States lease wireless telephone and data service from the four major cellular carriers in the country—AT&T Mobility, Boost Mobile, T-Mobile US, and Verizon—and offer various levels of free and/or paid talk, text and data services to their customers.

7. List of Bluetooth profiles - Wikipedia

   en.wikipedia.org/wiki/List_of_Bluetooth_profiles

   SIM Access Profile (SAP, SIM, rSAP) [ edit ] This profile allows devices such as car phones with built-in GSM transceivers to connect to a SIM card in a Bluetooth enabled phone, thus the car phone itself does not require a separate SIM card and the car external antenna can be used.