When inserting headphones into the 3.5mm headphone jack, the plug does not sit flush into the jack. This allows the plug to easily rotate, causing sound to go in and out on my unit. Can someone please test this on their vibrant. Plug in your headphones that came with the unit, does yours sit flush? Turn on avatar or make a phone call, and turn the headphone plug, does your sound cut in and out? This may be a major problem for me, I don't like using bluetooth, I prefer headphones in the car, but if I move my face, and this causes the phone plug to even slightly turn in the jack, I lose sound. Can someone verify if your unit does the same thing? UPDATE: NEVERMIND! I guess I wasn't using enough force, if your plug sticks out, push it in really hard, it will then go all the way down, and it wont rotate, and the sound won't cut in and out!!