Gary, the Avant-2 so far has been pretty impressive. I am quite happy with it despite a few small software glitches, which will likely be fixed in the near future. To answer your question about an iphone, I have no idea because I am android user, which is obviously working fine. I can stream music via bluetooth, tether via usb or even via wifi hotspot. While reading the forums, some users reporting being unable to stream music via bluetooth from an iphone while others said they had no problems with it. So I am not sure what the latest status is. I'll try to get my friend to use an iphone with it and will report when I get a chance.