What we do, we do perfectly - since we were founded in 2005.
And leave out all the bells and whistles. That's why Blau is now a leading mobile phone discounter. Blau €15 Mobile Top-up DE With cheap cell phones with a contract, cell phone contracts, prepaid offers and great network coverage - thanks to Telefónica as the network operator. As a mobile phone provider, we at Blau focus on the essentials.