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Pages in category "Defunct mobile phone companies of the United States" The following 32 pages are in this category, out of 32 total. This list may not reflect recent changes .
Defunct mobile phone companies of the United States (2 C, 32 P) I. ITT Inc. (1 C, 38 P, 1 F) M. MCI Communications (12 P) O. Oak Industries (1 C, 5 P)
Four of the top five wireless providers have all standardized on 4G LTE and 5G NR as their wireless communication standards, whereas Boost Mobile uses only 5G NR.Of which, LTE has been deployed across their entire coverage area; however, the LTE bands used by each provider remain largely incompatible.
Defunct mobile phone companies of the United States (2 C, 32 P) L. Liberty Latin America (8 P) T. T-Mobile US (1 C, 10 P)
It was unencrypted and easily vulnerable to eavesdropping via a scanner; it was susceptible to cell phone "cloning" and it used a Frequency-division multiple access (FDMA) scheme and required significant amounts of wireless spectrum to support. On 6 March 1983, the DynaTAC 8000X mobile phone launched on the first US 1G network by Ameritech.
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]
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