Siemens Mobile

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Not to be confused with Siemens Mobility.
Siemens Mobile
Industry Telecommunications equipment
Fate Acquired by BenQ
Successor BenQ-Siemens
Founded 1985
Defunct 2005
Headquarters Munich, Germany
Area served
Products Mobile phones
Parent Siemens AG

Siemens Mobile was a mobile phone manufacturer and a division of Siemens AG. Siemens sold Siemens Mobile to the Taiwan-based BenQ in 2005, which subsequently became BenQ-Siemens. The last Siemens mobile phones, the AL21, A31 and AF51, were released in November 2005.


The first Siemens mobile phone, the Siemens Mobiltelefon C1, was launched in 1985. In 1994 the Siemens S1 GSM phone was launched. In 1997 Siemens launched the first phone with a colour screen, the Siemens S10, with a screen capable of displaying red, green, blue and white. In the same year Siemens launched the first "outdoor" phone, the Siemens S10 Active, with enhanced shock, dust and splash protection. Siemens launched the first slider phone, the Siemens SL10, in 1999.

Siemens acquired the mobile phone division of Bosch in 2000. In the same year Siemens launched one of the first phones with an MP3 player and external memory card support (MultiMediaCard), the Siemens SL45.

In 2003 Siemens launched its first phone running on the Symbian OS operating system, the Siemens SX1. The phone featured hot swappable MultiMediaCard. In the same year Siemens launched the Xelibri range of fashion phones. In 2005 Siemens launched the first phone with real GPS support, the Siemens SXG75.

In 2005 the Taiwanese company BenQ acquired the loss-making Siemens Mobile from Siemens, together with exclusive right to use the Siemens trademark on its mobile phones for 5 years.[1] Before transferring the mobile phone subsidiary to BenQ, Siemens invested 250 million euros and wrote down assets amounting to 100 million euros.[2] Siemens also acquired a 2.5% stake in BenQ for 50 million euros. BenQ subsequently released mobile phones under the BenQ-Siemens brand, from its German unit. In 2006 the German unit of BenQ filed for bankruptcy.[3][4]


File:Siemens MT 50 01.jpg
The Siemens MT50
The BenQ-Siemens S68
File:Siemens A52.jpg
The Siemens A52


Siemens Mobile sponsored Lazio from the 2000/2001 season to the 2002/2003 season and Real Madrid from the 2002/2003 season to the 2005/2006 season. On July 17, 2002 began the Siemens contract with Real Madrid, that season was signed Ronaldo Nazario da Lima. However, with Siemens, the Madrid team only won five titles, which are known as the drought of titles from 2003 to 2006, with the resignation of Florentino Perez. Siemens Mobile also sponsored non-shirt partnerships with a number of English football clubs including Liverpool and Chelsea, with John D. Bernard from UK marketing.

Siemens Mobile also sponsored Olympiacos until season 2005/2006. Last season shirt sponsorship of Greek, in Group F of the UEFA Champions League, Real Madrid and Olympiacos agreed, making the two parties, the visitor does not take advertising for Siemens Mobile.

Siemens Mobile sponsored McLaren Mercedes Formula-1 team between 2001-2004.


  1. "Siemens sells mobile-phone unit". BBC News. 7 June 2005. Retrieved 2 February 2013. 
  2. Siemens sells mobile phone unit to BenQ
  3. BenQ Mobile – end of the story for Siemens
  4. Heise Online - The end of BenQ Mobile
  5. Siemens A52 - Full phone specifications
  6. ,