If you have a pre-facelift car and a phone that supports rSAP (some Androids and Blackberry but not iPhone) then it is possible, although you will also need the 3G+ Sat Nav to be able to utilise a data connection, the RMC system does not utilise data. If your car is a facelift (2015 onwards) then I think the answer is no as these cars were shipped with a built in SIM negating (in Audi' opinion!) the need for an external mobile data connection although they still had a slot for a third party SIM. Audi for some reason did not allow hot spotting of the car to the phone, although you can hotspot the phone to the car.