Just got a new phone and was wondering what the best option was for using it in the car!

Have an aux in, in the arm rest but not sure if that is any good with phone calls as I guess its just meant for music?

Not to bothered about playing music so just wanted a simple option and not to expensive. From what I have read on the forums the VW kit wont be any good as I have an Iphone and it too expensive and not compatible!

Any help or suggestions would be appreciated.