X-Post: Aren't all B5 S4s pre-wired with mics and speakers for phones?
 

Contacted one of the venders of BT kit, they said no. TIA.

AFAIK yes.

There is a mic near the moonroof knob and the speaker is in the driver door.
 

the mic is complete crap, however.

quickaudi did a custom install for his phone (which has now been replaced anyway). the mic was terrible. He was able to replace it with a better one, if i remember correctly.

fwiw, the mic built into the B7 cars is fantastic.

old B5's had the mic there before there was an airbag