How do you make it intigrate with your simcard to make phone calls?
Do you have to add the telephone module? How much is it?

 

You have to add the telephone module to make it work. About $900. It works really well, except for the fact that there are better technologies out like bluetooth that don't require you to get either an extra card or open your phone up every time you get in your car. Number 1 questions I hear all day..."does it come with bluetooth?"