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Farmers Mutual Telephone Company: CDMA2000: EV-DO, LTE: Unknown: 2018: Sold spectrum licenses to Verizon Wireless and Eltopia Communications and became a Verizon Wireless MVNO. Fuego Wireless: LTE: Unknown: 2016: Sold network and spectrum licenses to AT&T and Infrastructure Networks [60] Golden State Cellular: CDMA2000: EV-DO: 0.018 [61] 2014 ...
A. Eicoff & Company (Chicago) AKPD Message and Media (Chicago) All By Students (ABS) Notebooks (Chicago) Burrell Communications Group (Chicago) Cramer-Krasselt (Chicago) Draftfcb (Chicago) Edelman (Chicago) Epsilon (Chicago) Havas (Chicago) IP Pixel (Chicago) IRI (Chicago) Laughlin Constable (Chicago) Leo Burnett Worldwide (Chicago) Plan B ...
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.
Alabama Telephone Company; All American Direct; American Cable and Radio Corporation; Ameritech; Andrew Corporation; AT&T Communications (1984–2010) AT&T Corporation; Atlantic and Pacific Telegraph Company; AT&T Broadband; Automatic Electric
PrimeCo Personal Communications, L.P. (later known as Chicago 20 MHz, LLC [1]) was a joint venture of Bell Atlantic, Nynex, US West and AirTouch Communications, and was the first wireless telecommunications provider to turn up CDMA service on the PCS (1900-MHz) band in November 1996. [2]
Cloud-based Communications, VoIP and IVR Ooma: Palo Alto, California: United States: VoIP communications for small businesses, home and mobile Radvision: New Jersey: United States: Video conferencing and telepresence technologies RingCentral: Belmont, CA and London: United States and UK: Cloud-based telephone systems Sipgate: Düsseldorf: Germany
The company purchased PrimeCo Wireless Communications in 2002 and launched in the Chicago area on November 22. It built on this growth by signing Chicagoan Joan Cusack as national spokesperson. In January 2003, U.S. Cellular acquired naming rights to the baseball stadium used by the Chicago White Sox. [5]
This is a list of Illinois companies which includes notable companies that are headquartered in Illinois, or were previously headquartered in Illinois. In general, this list does not include companies headquartered in one of the municipalities of the Chicago metropolitan area .