This is an OEM Black Headphone Jack Audio Flex for iPhone 4,which including the headphone jack ,the upper microphone and electronic portions of the volume buttons and silent switch <br />Perfect replacement part if you cann't hear anthing after you plug the headphone in you iPhone 4 <br />http://www.hytparts.com/000396-new-oem-headphone-audio-jack-w-volume-switch-flex-cable-repair-part-for-iphone-4-black.html
