Visual Voicemail Deutschlandsim O2 No VVM function

Hi there,

I've just started with a new provider (Deutschlandsim) using the german O2 Network.

Everythings works fine, but the VVM simply does not want to work. After contacting the tech crew from Deutschlandsim they say that everything is installed correctly and the only reason could be at Apple.

I've installed iOS 6.0, the newest carrier from o2 and have NO JAILBREAK or anything.

When I click on the voicemail button it is forwarded to the called-version but saying I have no access to the system.

Having installed the sim in a fresh setuped iphone did not change anything either..

Hope somebady has a chance to help me here..

Thanks alot

Chris