Sorry if this has been asked already, I did some searching and couldn't find clear directions. I see a microphone on the dash behind the steering wheel to the right. Can I hook up my iPhone 4s to this without paying for a service?
Yes it is worth using. Like tekneek said- you can use your phone "hands free".
Bluetooth is a technology, not a service. You use it in conjunction with your existing phone and service. I don't have my manual handy but it has directions on how to pair devices to it. Take a look at it, you'll be amazed at how much info is there. Good luck and keep your eyes on the road and your hands 'free'.