In June 2004, Permira, an international private equity firm, acquired Swisscom's 95% stake in Debitel.
In 2006 it was announced that Debitel would merge with _dug telecom AG, a German telecommunications company with 430 outlets of its own which had been founded in 1993 as a mobile telephone direct sales company called ‘Dittrich und Grella’.
In July 2007 Debitel was granted permission by the EU Commission to take over Elmshorn-based telecommunications company Talkline.
[3] In April 2008, Freenet AG announced it would purchase Debitel from Permira including all liabilities for approx.
[4] Between 1999 and 2005, Debitel was the main kit sponsor of German football club VfB Stuttgart.