I have the V-MODA vibe headphones that have the iPhone mic/control button built-in, and they seem to be somewhat incompatible with the iPhone 4. The headphone speakers work just fine for listening to music, but the button doesn't seem to control the iPod functions very well (or at all). I had to press it multiple times for the music to turn off, then press it multiple times again to get the music to turn back on. After I had gotten the music to turn back on, pressing the button seemed to change the volume, instead of pausing or advancing the track. I haven't had a chance to try the built-in mic yet, but when I did attempt to make a call while wearing the headphones, there was a constant clicking noise present (which was not there when the music was playing, thankfully) - I could hear the ring and voice mail message pick up, but the clicking was almost as loud. Has anyone else experienced this problem with these or other third-party headphones? I was under the impression that nothing had changed with the headphone jack or the control button functionality. To be clear, I do not have a Bumper case on my phone (just read about that headphone jack issue).