The brand blau (previously: blau Mobilfunk GmbH), is a mobile network brand owned by Telefonica Germany.[1] The key brands are the discount tariff "blau.de" for calls within Germany and "blauworld" for calls outside Germany.
History
The company was founded by three entrepreneurs, Martin Ostermayer, Thorsten Rehling and Dirk Freise in 2005. The money came from the sale of the website handy.de to Bertelsmann.
A company for the distribution of mobile phone service with E-Plus was the base to establish Blau Mobilfunk GmbH as the first independent mobile phone discounter.
Blau Mobilfunk took over the mobile virtual network operator in the discount sector, debitel-light, in November 2006. Debitel received a minority share of the Blau Mobilfunk GmbH as compensation. 2007 blau.de already had 600,000 customers.[2]
Blau Mobilfunk was taken over by the Dutch E-Plus-mother KPN