Ok so I wear my non-iphone headphones on the bus and when people call I just talk into the phone with the headphones on and it still works fine. HOWEVER. I noticed that whenever my friend with another iphone calls me from his iphone he cant hear me IF Im using regular headphones. anyone else have this issue?? or care to experiment? sure its kinda obscure but should happen fairly often if your sitting on the bus listening to music with good headphones and your hip iphone loving friend calls you. Then in order to talk to him you would have to pull the headphones out of the phone. Good thing I only have one friend with n iphone or this would get really annoying.