My headphone jack does not work anymore with a three ring plug. It will work with a two ring plug.
I have conducted all sorts of trials with this. There is nothing wrong with the earphones. The three ring plug works fine in an ipod and my laptop. The two ring plug works fine in the iphone, ipod and laptop. There is a fuzzy, scratchy sound when using the three ring plug. It worked fine when I first bought the earphones.
iPhone 5s, iOS 8.1.3