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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.
Sub-brand of Vietnam Telecommunications and Electronic Cables Joint Stock Company (VINACAP) - a subsidiary of VNPT. The brand was launched for the low-end market and targeted to users of Vinaphone's services. The brand ceased operation in c. 2016 due to poor sales. Hi-Mobile: Subsidiary of HiPT Bluefone: Subsidiary of CMC Cooperation Mobiistar ...
Pages in category "Defunct telecommunications companies of the United States" The following 98 pages are in this category, out of 98 total. ... Explora Phones Inc; F.
Parent company, Pinpoint Communications, discontinued cellular service and spectrum leases through Viaero Wireless were cancelled. Blue Wireless: CDMA2000: EV-DO, LTE: Unknown: July 2020: Exited business and sold spectrum licenses to Verizon. [42] Bluegrass Cellular: CDMA2000: EV-DO, LTE: 0.210 (March 2021) [43] March 2021: Acquired by Verizon ...
Defunct mobile phone companies of the United States. Subcategories. This category has the following 2 subcategories, out of 2 total. H. Helio (wireless carrier) (4 P) S.
Defunct mobile phone manufacturing companies. Note: This category lists mobile phone manufacturing companies that are formally defunct; and companies that still operate, but no longer manufacture mobile phones .
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