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, the United States and by the former subsidiary in the Netherlands.
Deutsche Telekom AG is a German telecommunications company that is headquartered in Bonn and is the largest telecommunications provider in Europe by revenue. Deutsche Telekom was formed in 1995 when Deutsche Bundespost was privatized. Since then, Deutsche Telekom has featured among Fortune 500 companies, with its latest ranking at number 62. The company operates several subsidiaries worldwide, including the mobile communications brand T-Mobile.
Celcom Axiata Berhad, DBA Celcom, is the oldest mobile telecommunications provider in Malaysia. Celcom is a member of the Axiata group of companies. Celcom was merged with Digi to formed CelcomDigi on 1 December 2022.
Slovak Telekom is the convergent telco provider with the largest internet, fixed-line, digital TV, ICT and mobile services portfolio. The company is 100% owned by Deutsche Telekom AG.
Magyar Telekom Nyrt. is one of the leading Hungarian telecommunications service provider company. It is a subsidiary of Deutsche Telekom.
Dialog Axiata PLC, is one of Sri Lanka's largest telecommunications service providers, and the country's largest mobile network operator with 17.4 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.
Mobitel was a Slovenian GSM/UMTS/LTE mobile operator. The company merged with Telekom Slovenije in 2013.
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%.
A1 Telekom Austria (A1, A eins) is the leading fixed and mobile network operator in Austria, with 5.4 million mobile and 2.3 million fixed-line customers. A1 Telekom Austria traces its origins to Austria's first GSM mobile phone network which began testing in 1992 and commercial operations in 1994, under the name Mobilkom Austria, then part of the Austrian state-owned PTT agency Post- und Telegraphenverwaltung (de; PTV) until it was split off into its own company in 1996. After Mobilkom's merger with A1 Telekom Austria Group in July 2010 it operates under the new name of A1 Telekom Austria.
Telekom Srbija a.d. Beograd is a Serbian state-owned telecommunications operator. It was founded in May 1997 as a joint-stock company, by spinning off the telecommunications business from PTT Srbija. In April 2015, Telekom Srbija started providing all services in Serbia under the mts brand.
COSMOTE MOBILE TELECOMMUNICATIONS S.A. known as just Cosmote is the largest mobile network operator in Greece. The company is headquartered in Athens and is a fully owned subsidiary of the Hellenic Telecommunications Organization (OTE), the incumbent telecommunications provider in Greece. COSMOTE has developed business operations in two other South East Europe countries through subsidiaries: Telekom Albania and Telekom Romania, addressing an extended market of 45 million people. In all three countries COSMOTE counts approximately 35.6 million customers.
The prevalent means of connecting to the Internet in Germany is DSL, introduced by Deutsche Telekom in 1999. Other technologies such as Cable, FTTH and FTTB (fiber), Satellite, UMTS/HSDPA (mobile) and LTE are available as alternatives.
Vodafone GmbH is a mobile telecommunications operator in Germany headquartered in Düsseldorf. It provides mobile phone, LTE, 5G, cable internet, landlines, cable TV, and IPTV services. As of the third quarter of 2021, Vodafone GmbH has more than 31 million mobile customers in Germany, making it the third-largest provider of mobile phone services in Germany. The company's headquarters are in the suburb of Heerdt in Düsseldorf, with regional offices throughout Germany. Vodafone Germany's main competitors are Telekom Deutschland and Telefónica Germany.
Makedonski Telekom AD is a telecommunications company in North Macedonia with headquarters in Skopje. It is part of the Magyar Telekom Group, which is a fully consolidated subsidiary of international Deutsche Telekom Group. It offers a range of telecommunications and entertainment services, such as telephone services, a range of internet access services including broadband internet, entertainment IPTV products and operates the national telephone network.
T-Mobile US, Inc. is an American wireless network operator headquartered in Overland Park, Kansas and Bellevue, Washington, U.S. Its largest shareholder is multinational telecommunications company Deutsche Telekom AG, which as of April 2023, holds a 53.3% majority stake in the company. T-Mobile US is the second-largest wireless carrier in the United States, with more than 110 million subscribers as of the end of Q2 2022.
VoLGA Forum was formed in March 2009 by a group of companies in the wireless industry in an effort to define a set of specifications for enabling delivery of voice services over 3GPP Long Term Evolution (LTE) access networks based on the current 3GPP Generic Access Network (GAN) standard.
Telecommunications in Germany is highly developed. The German telecommunication market has been fully liberalized since January 1, 1998. Germany is served by an extensive system of automatic telephone exchanges connected by modern networks of fiber-optic cable, coaxial cable, microwave radio relay, and a domestic satellite system; cellular telephone service is widely available, expanding rapidly, and includes roaming service to foreign countries. As a result of intensive capital expenditures since reunification, the formerly antiquated system of the eastern part of the country has been rapidly modernized to the most advanced technology. Deutsche Telekom began rolling out FTTH networks in ten cities in 2011, following the launch of pilot projects in Hennigsdorf, Braunschweig and Dresden in 2010.
HRMavenir Systems, Inc. dba Mavenir is an American telecommunications software company, created in 2017 as a result of a three-way merger of existing companies and technologies, that develops and supplies cloud-native software to the communications service provider (CSP) market.
One Albania sh.a. is a telecommunications company that operates in Albania. As AMC, it was part of the COSMOTE Group from 2000, and in 2015 joined the Deutsche Telekom group.
