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  2. Dual SIM - Wikipedia

    en.wikipedia.org/wiki/Dual_SIM

    The first phone to include dual SIM functionality was the Benefon Twin, released by Benefon in 2000. [7] More dual SIM phones were introduced in about 2007, most of them coming from small Chinese firms producing phones using Mediatek systems-on-a-chip. They started to attract mainstream attention. [8] [9]

  3. Dual-mode mobile - Wikipedia

    en.wikipedia.org/wiki/Dual-mode_mobile

    These phones include combination of GSM and CDMA technology. They can be used as a GSM or CDMA phone according to the user's preference. These handsets are also called global phones. An example of this is the Samsung SCH-A790. These dual-mode handsets are compatible with both GSM and CDMA networks and are essentially two phones in one device.

  4. AT&T Mobility - Wikipedia

    en.wikipedia.org/wiki/AT&T_Mobility

    However, the second Android phone AT&T released was the HTC Aria [81] [82] [83] which was announced on June 14, 2010 and released on June 20, 2010. The Samsung Captivate, which is part of the Galaxy S family, was released on AT&T's network on July 18, 2010. In addition to devices released on AT&T were a line of handsets manufactured by Motorola.

  5. SIM card - Wikipedia

    en.wikipedia.org/wiki/SIM_card

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

  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. H2O Wireless - Wikipedia

    en.wikipedia.org/wiki/H2O_Wireless

    h2o Wireless is a United States-based prepaid cell phone service, that utilizes the AT&T network. [2] It is a brand of mobile virtual network operator (MVNO) Locus Telecommunications, a subsidiary of Telrite Holdings, Inc., since 2019. [1] [3] Locus was formerly a subsidiary of KDDI America corporation, starting in 2010.

  8. Multi-SIM card - Wikipedia

    en.wikipedia.org/wiki/Multi-SIM_card

    Member-SIM MSISDN is transparent to the subscriber. Messages sent to member SIM are delivered to the Group MSISDN. Multi-SIM allows switching among (up to) 12 stored numbers from the phone's main menu. A new menu entry in the subscriber’s phone automatically appears after inserting the multi-SIM card into the cell phone.

  9. eSIM - Wikipedia

    en.wikipedia.org/wiki/ESIM

    An eSIM (embedded SIM) is a form of SIM card that is embedded directly into a device as software installed onto a eUICC chip. First released in March 2016, eSIM is a global specification by the GSMA that enables remote SIM provisioning ; end-users can change mobile network operators without the need to physically swap a SIM from the device.