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This graphic compares the market shares of the different mobile standards. Cellphone subscribers by technology (left Y axis) and total number of subscribers globally (right Y axis) In a fast-growing market, GSM/3GSM (red) grows faster than the market and is gaining market share, the CDMA family (blue) grows at about the same rate as the market ...
Networks on LTE bands 1, 3 (LTE-FDD) are suitable for roaming in ITU Regions 1, 3 and partially Region 2 (e.g. Costa Rica, Venezuela, Brazil and some Caribbean countries or territories. Networks on LTE band 20 (LTE-FDD) are suitable for roaming in ITU Region 1 only.
Country Operator Frequency (MHz) Band Duplex mode Launch date Notes Angola 800 20 FDD TBA [1]Multitel: 3500 42 TDD TBA [2] [3] [4] Cameroon Viettel (Nexttel): TBA [5] Equatorial Guinea
Apart from their main spectrum holdings across large regions in the country (listed below) the major US carriers (AT&T, Sprint, T-Mobile & Verizon) also hold various Cellular Market Area (CMA) and/or Economic Area (EA) licenses for the AWS 1700 band, as well as Major Trading Area (MTA) and/or Basic Trading Area (BTA) licenses for the PCS 1900 band.
The Asia-Pacific Telecommunity (APT) band plan is a type of segmentation of the 612–806 MHz band (usually referred to as the 600 MHz & 700 MHz bands) formalized by the APT in 2022–2023 and 2008-2010 respectively [1] and specially configured for the deployment of mobile broadband technologies (e.g. most notably Long Term Evolution, LTE).
4G : LTE-FDD : B1 2100 MHz 4.5G : TDD LTE : B40 2300 MHz: 0.004574 [184] (EOY 2020) Feels Telecom Corporation Co., Ltd. 11: AJ SIM (Host operator TOT) 3G : UMTS/WCDMA : B1 2100 MHz 4G : LTE-FDD : B1 2100 MHz 4.5G : TDD LTE : B40 2300 MHz: Launched November 2020 [188] AJ Advance Technology Pcl. 12: Redone (Host operator NT Mobile (formerly TOT ...
As of March 2013, 156 commercial 4G LTE networks existed, including 142 LTE-FDD networks and 14 LTE-TDD networks. [86] As of November 2013, the South Korean government planned to allow a fourth wireless carrier in 2014, which would provide LTE-TDD services, [ 77 ] and in December 2013, LTE-TDD licenses were granted to China's three mobile ...
For example, a walkie-talkie or a DECT phone or so-called TDD 4G or 5G phones requires only a single frequency for bidirectional communication, while a cell phone in the so-called FDD mode is a full-duplex device, and generally requires two frequencies to carry the two simultaneous voice channels, one in each direction.