So i just bought a pair of bose sound true ultra headphones. All the buttons on the control switch work. So when I'm listening to music I can pause my music by clicking the middle button, the same middle button also answers incoming calls. For some reason it'll let me pause music, but won't work to answer phone calls. I tried it on someone elses iPhone and it worked just fine. Any ideas what is causing this? I tried cleaning out the jack with a q tip and nothing...