I recently brought some earphones with a mic from amazon, but when I plug them in my iPhone it sounds like its filtered, on some songs I hear the vocals only and other songs I only hear the instrumentals,
  
  They work fine on my iPad 2, sometimes when I pull them out of the jack abit, they work,
  
  CAN SOMEONE PLEASE TELL ME HOW TO FIX THIS PLEASE THANKS
  См. статью: Weird sound when I plugin earphones in iPhone 4?