All features of Audi connect® are available with connectivity provided through a service partner. Connectivity for the 2015/16 A3 Sedan is provided by AT&T. Connectivity for all other models equipped with Audi connect® is provided by T-Mobile, including the A4, A5, allroad, A6, A7, A8, Q5, and Q7. New vehicles equipped with Audi connect® come with a complimentary six-month trial period.
More info here: Audi Connect Homepage
For help configuring Audi connect® call (877) 505-AUDI (2834)