I have an 05.5 s4 with satellite radio and navigation. How do i know if my system will work with a bluetooth phone? I wanna figure this out before I buy a new phone. Did i need to purchase a "bluetooth option"?

if you have a Sym II then I recommend adding an aftermarket BT kit (Parrot, Motorola IHF1000 etc). Do a search in the audio forum for more details.

If you have the RNS-E, I suggest reading some of the details in the link below...<ul><li><a href="http://www.navplus.us/forum/index.php?f=13">http://www.navplus.us/forum/index.php?f=13</a</li></ul>

It may depends of the compatibility list you have normally available to the manufacturer site. this link could helping you.
http://forums.fourtitude.com/zerothread?id=2012462&amp;postid=21498329