Bruno Jacobfeuerborn

T-Mobile USA, Inc. engages in the provision of wireless voice, messaging, and data services. It offers different plans for phones and tablets. The company was founded by John W. Stanton in 1994 and is headquartered in Bellevue, WA.

Polska Telefonia Cyfrowa Sp zoo provides wireless telephonic services in Western Europe. Its services include call forwarding, call waiting, voicemail, account information, short message service, multimedia messaging service, information services and wireless Internet access. It also offers roaming services to its subscribers in 156 countries. The company's products and services are sold under the brand name, Era. Polska Telefonia Cyfrowa offers its services to individual post paid, prepaid, and corporate customers. Polska Telefonia Cyfrowawas founded in 1995 and is headquartered in Warsaw, Poland.

Part of Communications Test Design, Inc., CTDI GmbH is a German company that repairs, installs, tests, and manufactures telecommunications equipment. The company is based in Malsch, Germany. The company was founded in 1966. The CEO is Dieter Hollenbach.

T-Home Venture Fund to invest in small and middle market innovative technology oriented companies focused on IP networks and broadband applications.

VDE Verband der Elektrotechnik Elektronik Informationstechnik is a global network of experts in science and industry, specializing in topics related to electrical engineering. The company is based in Frankfurt am Main, DE, and has subsidiaries in the United States and Germany. The German company sets standards, tests, and certifies products. The CEO of the private company is Ansgar Hinz.

Part of Deutsche Telekom AG, DFMG Deutsche Funkturm GmbH operates and markets radio stations. The company is based in Muenster, Germany. The German company was founded in 2002. Bruno Jacobfeuerborn has been the CEO of the company since 2017.

Telekom Deutschland GmbH provides mobile communication services. It offers fixed network telephony, broadband Internet, mobile voice and data, and IPTV products and services. The firm's technologies for mobile data transmission include GPRS, EDGE, W-LAN, UMTS, and HSDPA. The company was founded in 1993 and is headquartered in Bonn, Germany.