Telefónica, S.A. is a Spanish multinational telecommunications company with registered office and headquarters located in two different places, both in Madrid, Spain. It is one of the largest telephone operators and mobile network providers in the world. It provides fixed and mobile telephony, broadband, and subscription television, operating in Europe and the Americas.
The Universal Mobile Telecommunications System (UMTS) is a 3G 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.
T-Mobile is the brand name used by some of the mobile communications subsidiaries of the German telecommunications company Deutsche Telekom AG in the Czech Republic, Poland and the United States.
O2 (typeset as O2) is a global brand name owned by the Spanish telecommunications company Telefónica. The company uses the O2 brand for its subsidiaries in the United Kingdom and Germany. Since 2018, it is also used as an online-only flanker brand in Spain.
Vodafone Ireland Limited, a wholly owned subsidiary of Vodafone Group, is a mobile phone network, broadband and TV provider in Ireland. It was created when the Vodafone Group bought Eircell, the mobile arm of Telecom Éireann. As of September 2019, Vodafone has 26% of broadband subscribers, and 43% of mobile phone subscribers.
Telefónica Ireland was a broadband and telecommunications provider in Ireland that traded under the O2 brand (typeset as O2). O2 Ireland was previously called Esat Digifone when it was owned by Esat Telecommunications (and Telenor) from 1997 to 2006.
BT Communications (Ireland) Limited is a telecommunications and internet company in Ireland. It is a subsidiary of BT Group plc.
Vivo, known as Vivo Brazil, is a brand of Telefônica Brasil, a subsidiary of Telefónica and the largest telecommunications company in Brazil. It is headquartered in the Brooklin Novo neighborhood of São Paulo.
Movistar is a major telecommunications provider owned by Telefónica, operating in Spain and Hispanic American countries. It is the largest provider of landline, broadband, mobile services, and pay television in Spain. Movistar is the second-largest wireless carrier in Mexico, with 25.8 million subscribers as of January 2020.
Vodafone Czech Republic a.s. is a Czech telecommunications company, owned by Vodafone Group. It is among the largest Czech companies by revenue.
América Móvil, S.A.B. de C.V. 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.
Eurotel was the trade name of the first mobile phone network in Czechoslovakia. Given the possibility of a forthcoming of split of Czechoslovakia into two separate countries, Eurotel was formed as two separate legal entities: Eurotel Praha and Eurotel Bratislava.
Yettel Serbia is a Serbian mobile, fixed, internet and IPTV provider, owned by the Czech investment group PPF. It is headquartered in Belgrade. As of 2020, it is the second largest mobile telephony operator with market share of 36.98%.
The first analog mobile radio telephone in Czechoslovakia was AMR, in Czech Automatizovaný městský radiotelefon.
Internet in the Czech Republic and Internet access are largely provided by the private sector and is available in a variety of forms, using a variety of technologies, at a wide range of speeds and costs. In 2013, 68% of Czechs were connected to the Internet. From 2013 to 2022, the number of Internet users in the Czech Republic increased rapidly to 91.48%.
Hutchison 3G Enterprises S.A.R.L., trading as 3 (Three) and Hutchison 3G, is the owner of several originally UMTS-based mobile phone networks and broadband Internet providers, which operate in Hong Kong, Macau, Austria, Denmark, Indonesia, Ireland, Italy, Sweden, and the United Kingdom.
Telefonica UK Limited, trading as O2 (stylised as O2), is a British telecommunications services provider, headquartered in Reading, England which operates under the O2 brand. It is owned by VMED O2 UK Limited, a 50:50 joint venture between Telefónica and Liberty Global. O2 is the UK's largest mobile network operator, with 23.8 million subscribers as of July 2024.
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.
Three Ireland (Hutchison) Limited, commonly known as 3 Ireland or Three Ireland, is a telecommunications and Internet service provider operating in the Republic of Ireland as a subsidiary of CK Hutchison Holdings, operating under the global Three brand. The company launched in July 2005 and provides 2G GSM, 3G UMTS, 4G LTE and 5G NR mobile phone services. Three's former holding company, Hutchison Whampoa, acquired O2 Ireland in June 2013, and the company was fully merged into the operations of Three Ireland in March 2015.
CETIN a.s., is a Czech telecommunications company that is part of PPF Group, an international investment group formerly majority-owned by Czech billionaire Petr Kellner. The company was created as a result of the separation of O2 Czech Republic a.s. into two companies, following a decision taken at O2 Czech Republic’s general meeting on 28 April 2015. The actual separation took place on 1 June 2015. CETIN, the new company created alongside O2, now runs the fixed-line access network, the mobile access network and international telecommunication services that were previously run by the combined O2 Czech Republic.
Kč 37.996 billion (2018)
Kč 7.108 billion (2018)
