So I was under the impression that the iPhone only has one speaker - the one on the bottom of the phone. Apparently, I was wrong. Lately my iPhone has been showing a button to enable AirPlay. When I click on the button, it shows two options, "iPhone," and "iPhone Speaker." I saw this and figured "eh, it's just a bug...", however, I was wrong! When I select "iPhone" my music seems to play from some speaker at the TOP of the phone, either through the headphone port or the noise canceling mic, it seems. It is also very quiet compared to the normal iPhone speaker that is on the bottom of the phone. Can anyone explain this?