A quick question, which probably has a simple answer (that, after searching, I just can't seem to find.) I'm looking at getting an iPhone, but I frequently need to access my calendar / contacts / email archives while on a call. If I use a Bluetooth headset, is it possible to continue my conversation while using other programs (like Calendar?) I would assume this would be the case -- but of course, I don't want to make a foolish assumption! Thanks in advance to anyone who can clear this up for me.