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2. SIM lock - Wikipedia

   en.wikipedia.org/wiki/SIM_lock

   SIM lock. A SIM lock, simlock, network lock, carrier lock or ( master) subsidy lock is a technical restriction built into GSM and CDMA [1] mobile phones by mobile phone manufacturers for use by service providers to restrict the use of these phones to specific countries and/or networks. This is in contrast to a phone (retrospectively called SIM ...

3. Mobile network codes in ITU region 3xx (North America)

   en.wikipedia.org/wiki/Mobile_network_codes_in...

   AT&T: AT&T Mexico: Not operational: iDEN 800: Former Nextel; shut down 2017: 334: 020: Telcel: América Móvil: Operational: UMTS 850 / UMTS 1900 / LTE 850 / LTE 1700 / LTE 2600 / 5G 3500: former Radiomóvil Dipsa; GSM shut down Sep 2020: 334: 030: Movistar: Telefónica: Operational: MVNO: former Pegaso PCS; MVNO on AT&T, own spectrum returned ...

4. 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 three major cellular carriers in the country, AT&T Mobility, T-Mobile US, and Verizon. [1] [2] In 2016, MVNOs across the nation such as Metro PCS, Boost Mobile, Cricket Wireless, and Tracfone brands served about 36 million subscribers.

5. TracFone Wireless - Wikipedia

   en.wikipedia.org/wiki/TracFone_Wireless

   TracFone Wireless, Inc. ( TFWI) is an American prepaid, no-contract mobile phone provider. TFWI is a subsidiary of Verizon Communications, [1] and offers products and services under several brands. It operates as a mobile virtual network operator (MVNO), holding agreements with the three largest United States wireless network operators to ...

6. Cricket Wireless - Wikipedia

   en.wikipedia.org/wiki/Cricket_Wireless

   Cricket offers a variety of phones including most of the latest iPhone and Android models. In July 2013, AT&T agreed to buy Cricket Wireless' parent for $1.2 billion. The FCC approved the acquisition between AT&T and Leap Wireless in March 2014. In doing so, AT&T merged its own Aio Wireless prepaid brand into Cricket to form the "New Cricket".

7. Smartphone - Wikipedia

   en.wikipedia.org/wiki/Smartphone

   A smartphone displaying the homepage of the English Wikipedia. A smartphone (often simply called a phone) is a mobile device that combines the functionality of a traditional mobile phone with advanced computing capabilities. It typically has a touchscreen interface, allowing users to access a wide range of applications and services, such as web ...