Joesbuell does you COMAND connect to the internet? If not then I'm guessing you would like to use your phone as an access point to use COMAND Online. I think you will need to have some software for that to actually work installed on your phone. I'm pretty sure I read on either this forum or german car forum about how to do that. German car forum is getting very big and long especially on A class so might be easiest to search here first.
But if you check this link out it might be of use, I have a feeling this is what they were using.