Sorry if this was covered but Ive lost my dial tone when i go to make a call i hear notthing and the all of a sudden a voice when the other person answers. I have a avic f900 bt with software version 2.06 and im using the bt software 2.9 ive switched between the 2 and still notthing any help would be great thankyou also my phone is a iphone3g ver.3.0