Question: The Samsung F480 is available from which holding company for Deutsche Telekom AG?

Context paragraphs:
Samsung SGH-F480: The Samsung F480 (also known as Tocco in many English-spoken countries, or Player Style in France) is a touch-screen mobile phone announced in February 2008 and released in May 2008 by Samsung Mobile.  The F480 is available from Orange, T-Mobile, 3, Virgin Mobile, Telstra, Optus, and O2 mobile carriers under both contract and prepaid plans.  Models without a SIM lock are also available.  It comes in three colours: black, pink, and gold.  The devices uses a 2.8 in HAPTIC TFT touch screen that can render 256,000 colors.

Heubach Telecommunication Tower: Heubach Telecommunication Tower is a 162 metre tall telecommunication tower of Deutsche Telekom AG on Glasenberg at Heubach in Baden-Württemberg.  It is used for directional radio, mobile radio, police and fire brigade radio also used for FM- and TV transmission.

Deutsche Bundespost: The Deutsche Bundespost (German federal post office) was a state run business founded in 1950.  It was initially the second largest federal employer during its time.  After staff reductions in the 1980s, the staff was reduced to roughly 543,200 employees in 1985.  The corporation was dissolved in 1995 under the first and second postal reforms that took place in the German Post Office.  Following the reforms, the former Deutsche Bundespost was broken into three public corporations: Deutsche Post AG (German Post), Deutsche Telekom (German Telecom), and Deutsche Postbank AG (German Post Bank).

Deutsche Telekom: Deutsche Telekom AG (   ) (short form in writing only: DT, English: "German Telecom" ) is a German telecommunications company headquartered in Bonn.  Deutsche Telekom was formed in 1996, as the former state-owned monopoly Deutsche Bundespost was privatized.

Deutsche Telekom eavesdropping controversy: The Deutsche Telekom eavesdropping controversy became public at the end of May 2008 through an article in the German weekly "Der Spiegel".  The prosecutor in Bonn has initiated investigations against eight former members of Deutsche Telekom's advisory board, executive board and former employees.  The investigation focuses on alleged eavesdropping against journalists and members of the supervisory executive boards of Deutsche Telekom, allegedly initiated by then chairman of the supervisory board Klaus Zumwinkel and then CEO .  The objective of the eavesdropping was to find out who had leaked confidential information about planned lay-offs and acquisitions to the media in 2005 and 2006.  According to German law half the members of the advisory board of large publicly listed companies have to be representatives of the employees.  These were apparently suspected of having leaked the information.

Move On (2012 film): Move On is an international film project from 2012 directed by Asger Leth in collaboration with Deutsche Telekom AG.  The leading actor is Mads Mikkelsen, who is supported by German actress Alexandra Maria Lara and newly discovered Slovak actress Gabriela Marcinkova.  At www.move-on-film.com, a new episode of the movie appeared each week, and since its world premiere on 6 November 2012 in Berlin, all eight episodes can be viewed there.

DFS Kopernikus: DFS-Kopernikus (meaning "Deutscher Fernmeldesatellit Kopernikus") was the name of three geostationary satellites of Deutsche Bundespost and later Deutsche Telekom AG.  They are no longer in use.

Hirschlanden transmitter: The Hirschlanden transmitter is a facility of the Deutsche Telekom AG (in earlier days: Deutsche Bundespost) for mediumwave broadcasting south of Ditzingen-Hirschlanden (a village which is a part of the German city of Ditzingen) situated at 48°49'47" N and 9°02'15" E.

Magyar Telekom: Magyar Telekom Nyrt.  (Magyar Telekom Távközlési Részvénytársaság – Hungarian Telekom Telecommunications Plc.) is the largest Hungarian telecommunications company.  The former monopolist is now a subsidiary of Deutsche Telekom (in 59.21% of shares).  Until 6 May 2005, it was (and informally still is) known as "MATÁV" ("Magyar Távközlési Rt." - Hungarian Telecommunications PLC.).  The company was formed under the name of "Magyar Távközlési Vállalat" (Hungarian Telecommunications Enterprise) in December 1989, when "Magyar Posta" (Hungarian Post) was split to three separate enterprises.  On 31 December 1991, the company was re-structured as a Public Limited Company, as "Magyar Távközlési Rt.", and the company remained in 100% state ownership until the end of 1993.  On 1 July 1993, the Telecommunications Act came into effect, and now it was possible to privatise the company.  A consortium was formed by Deutsche Telekom and Ameritech International, which was named "MagyarCom", and bought into the company a share of 30.1% for a price of 875 million USD.

T-Mobile: T-Mobile International AG was a holding company for Deutsche Telekom AG's mobile communications subsidiaries.  From 2003 to 2007 T-Mobile International was one of Deutsche Telekom's segments beside the segments of 'Broadband/Fixnet', 'Business Customers' and 'Group HQ and Shared Services'.  T-Mobile International AG lost relevance when Deutsche Telekom transformed its structure to adopt a regional setup (Germany, Europe, USA) in 2009 by combining its previously separated fixed and mobile subsidiaries to form integrated local businesses.

Supporting paragraphs: Samsung SGH-F480 T-Mobile
Answer: T-Mobile