The Global System for Mobile Communications (GSM) is a standard developed by the European Telecommunications Standards Institute (ETSI) to describe the protocols for second-generation (2G) digital cellular networks used by mobile devices such as mobile phones and tablets. GSM is also a trade mark owned by the GSM Association. GSM may also refer to the Full Rate voice codec.
The Universal Mobile Telecommunications System (UMTS) is a third generation mobile cellular system for networks based on the GSM standard. Developed and maintained by the 3GPP, UMTS is a component of the International Telecommunication Union IMT-2000 standard set and compares with the CDMA2000 standard set for networks based on the competing cdmaOne technology. UMTS uses wideband code-division multiple access (W-CDMA) radio access technology to offer greater spectral efficiency and bandwidth to mobile network operators.
Celcom Axiata Berhad, is the oldest mobile telecommunications provider in Malaysia. Celcom is a member of the Axiata group of companies. Celcom was merged with Digi to form CelcomDigi on 1 December 2022.
Meteor Mobile Communications Limited was a GSM and UMTS mobile telecommunications company in Ireland. They operated a GSM/GPRS/EDGE/UMTS(HSPA+) and LTE cellular communications network under licence from the Commission for Communications Regulation (ComReg), and were the third entrant in the market, after Vodafone Ireland and Three Ireland. The company was a wholly owned subsidiary of Irish telecoms network Eir, having been purchased for €420m in 2005. Meteor was the only Irish owned mobile operator in Ireland. Meteor once issued new numbers with the prefix code 085. Since the introduction of full mobile number portability in Ireland, access codes have become less relevant as mobile telephone users may now retain their mobile telephone numbers when moving between mobile network operators. As a result, Meteor customers could have numbers starting with the codes 083, 085, 086, 087, or 089.
Nepal Doorsanchar Company Ltd., popularly known as Nepal Telecom or NTC, is a state-owned telecommunications service provider in Nepal with 91.49% of the government share. The company was a monopoly until 2003 when the first private sector operator United Telecom Limited(UTL) started providing basic telephony services. The central office of Nepal Telecom is located at Bhadrakali Plaza, Kathmandu. It has branches, exchanges and other offices in 184 locations within the country.
Radio Móvil Dipsa S.A.U., doing business as Telcel, is a Mexican wireless telecommunications company, owned by América Móvil. Founded in 1984 and based in Mexico City, Telcel is the leading provider of wireless communications services in Mexico. As of December 31, 2006, Telcel's cellular network covered more than 63% of the geographical area of Mexico, including all major cities, and 90% of Mexico's population. Telcel holds concessions to operate a wireless network in all nine geographic regions in Mexico using both the 850 megahertz and 1900 megahertz radio spectrum. According to Cofetel, as of July 2008, Telcel's subscribers represented an estimated 77.2% share of the Mexican wireless market. Telcel is the largest wireless carrier in Mexico, with 77.2 million subscribers as of March 2020.
Xfera Móviles, S.A.U., d/b/a Yoigo, is the fourth-largest mobile network operator in Spain and a subsidiary of the Spanish telecommunications company Grupo MásMóvil. Yoigo has a licence and its own cellular network for GSM/2G, UMTS/3G and LTE/4G technologies, and a national roaming agreement for usage of the 2G, 3G and 4G networks of Orange and Movistar.
Claro Company, known as Claro Mexico or simply Claro, is a Mexican company part of América Móvil, a Mexican telecom group. Claro serves clients in Argentina, Brazil, Chile, Colombia, Costa Rica, the Dominican Republic, Ecuador, El Salvador, Guatemala, Honduras, Nicaragua, Panama, Paraguay, Peru, Puerto Rico and Uruguay. The company's name means "bright," "clear," and also "of course," in both Portuguese and Spanish.
Dialog Axiata PLC, is one of Sri Lanka's largest telecommunications service providers, and the country's largest mobile network operator with over 17 million subscribers which amounts to 57% of the Sri Lankan mobile market. Dialog is a subsidiary of Axiata Group Berhad which owns 83.32% controlling stake of the company, while the rest is held by the public.
América Móvil is a Mexican telecommunications corporation headquartered in Mexico City, Mexico. It is the 7th largest mobile network operator in the world in terms of equity subscribers, as well as one of the largest corporations in the world. América Móvil is a Forbes Global 2000 company. As of Q1, 2019, América Móvil had 277.4 million wireless subscribers, and 84.3 million fixed revenue generating units.
Sri Lanka Telecom PLC, doing business as SLT-MOBITEL, is the national telecommunications services provider in Sri Lanka and one of the country's largest companies with an annual turnover in excess of Rs 40 billion. The company provides domestic and corporate services which include fixed and wireless telephony, Internet access and IT services to domestic, public and business sector customers. As of 2018 SLT-MOBITEL was Sri Lanka's second largest mobile network operator with over 7.9 million subscribers.
Libyana Mobile Phone is a Libyan mobile phone company established in 2004. It is one of the two major mobile phone operators owned by the Libyan Post Telecommunications & Information Technology Company (LPTIC).
bmobile is a Mobile Phone, Home Security provider, and fixed wireless provider of Trinidad and Tobago, operating as a division of TSTT.
Total Access Communication Public Company Limited, commonly known as DTAC, is a GSM mobile phone company in Thailand. It is the nation's third largest GSM phone company, after AIS and True. DTAC is owned by Norwegian company Telenor both directly and indirectly, and both companies share the same logo. As of 31 December 2011, DTAC had 23.2 million subscribers with a market share of subscribers at around 30 percent. As of 2019, the company has 20.642 million mobile subscriptions and 3904 employees. It is listed on the Singapore Exchange and the Stock Exchange of Thailand.
In telecommunications, long-term evolution (LTE) is a standard for wireless broadband communication for mobile devices and data terminals, based on the GSM/EDGE and UMTS/HSPA standards. It improves on those standards' capacity and speed by using a different radio interface and core network improvements. LTE is the upgrade path for carriers with both GSM/UMTS networks and CDMA2000 networks. Because LTE frequencies and bands differ from country to country, only multi-band phones can use LTE in all countries where it is supported.
The XT Network was a brand name for a UMTS and LTE mobile network run by Spark New Zealand . The network was initially built nationwide on WCDMA/UMTS 850 MHz, with 2100 MHz infill in major urban areas. The UMTS network is HSPA+ enabled, with a maximum downlink transmission rate of 21.1 Mbit/s and an uplink rate of 5.2 Mbit/s attainable for capable hardware. HSPA+ has a theoretical maximum of 56 Mbit/s download speed and 22 Mbit/s upload speed. Then under Spark 4G LTE is being built out. The network is not 2G capable, Telecom never operated a public GSM network.
ip.access Limited is a multinational corporation that designs, manufactures, and markets small cells technologies and infrastructure equipment for GSM, GPRS, EDGE, 3G, 4G and 5G. The company was acquired by Mavenir in September 2020.
3G mobile telephony was relatively slow to be adopted globally. In some instances, 3G networks do not use the same radio frequencies as 2G so mobile operators must build entirely new networks and license entirely new frequencies, especially so to achieve high data transmission rates. Other delays were due to the expenses of upgrading transmission hardware, especially for UMTS, whose deployment required the replacement of most broadcast towers. Due to these issues and difficulties with deployment, many carriers delayed acquisition of these updated capabilities.
FLOW is a trade name of the Caribbean former telecommunications provider Cable & Wireless Communications used to market cable television, internet, telephone, and wireless services provided by the company. Flow also replaced the UTS brand in the Dutch and French Caribbean, following their recent acquisition of United Telecommunications Service (UTS).
