I tried my iPhone Griffin Tunebud Mobile headp0hones (with mic and button) on my Nokia N900 thinking one headphone jack is the same as another. They dont really work and it is kinda odd. They seems to give a distorted feedback unless i insert them very slowly. Then the sound is only good hi-fi if I keep the headphones positioned just right or if they are plugged in all the way and I press the mute button. Weird.