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  2. List of United States wireless communications service ...

    However, Verizon is in the process of shutting down their non-LTE networks. Their 1X and EV-DO networks are currently supported, but will be discontinued on December 31, 2022. On December 31, 2020, Verizon will no longer allow phones that don’t support VoLTE to be activated on their network (tablets and hotspots can still be activated as long ...

  3. TracFone Wireless - Wikipedia

    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 ...

  4. Mobile telephony - Wikipedia

    Mobile telephony is the provision of telephone services to phones which may move around freely rather than stay fixed in one location. Telephony is supposed to specifically point to a voice-only service or connection, though sometimes the line may blur.

  5. Motorola StarTAC - Wikipedia

    The Motorola StarTAC, first released on January 3, 1996, is often assumed to be the first ever clamshell (flip) mobile phone. Technically, however, NEC had been releasing flip phones on NTT Docomo's PDC Mova network long before 1996, namely the TZ-804 and TZ-1501, both respectively launched in 1991 and late 1994.

  6. Evolution-Data Optimized - Wikipedia

    It is a part of the CDMA2000 family of standards and has been adopted by many mobile phone service providers around the world particularly those previously employing CDMA networks. It is also used on the Globalstar satellite phone network. EV-DO service was discontinued in much of Canada in 2015.

  7. Telephone exchange - Wikipedia

    A telephone exchange, telephone switch, or central office is a telecommunications system used in the public switched telephone network (PSTN) or in large enterprises. It interconnects telephone subscriber lines or virtual circuits of digital systems to establish telephone calls between subscribers.

  8. Text messaging - Wikipedia

    To convince more customers to buy unlimited text messaging plans, some major cellphone providers have increased the price to send and receive text messages from $.15 to $.20 per message. This is over $1,300 per megabyte. Many providers offer unlimited plans, which can result in a lower rate per text, given sufficient volume. Japan

  9. WiMAX - Wikipedia

    HTC announced the first WiMAX enabled mobile phone, the Max 4G, on November 12, 2008. The device was only available to certain markets in Russia on the Yota network until 2010. HTC and Sprint Nextel released the second WiMAX enabled mobile phone, the HTC Evo 4G, March 23, 2010 at the CTIA