Mine also is not working. I tried to clean the litter out of it. But no results. The phone does not detects any headphone.

mine is doing the same thing. it pauses as if the headphones were unplugged

That makes three of us. Mine stopped working also.

My phone is doing the same thing and I just got it

Yea, I've tried 3 different ones. It just went from great to not working, no static or other issues. Just seemed strange for it to quit without it going in & out. Thanks for the reply!

Hey Gary. Have you tried using a different headphone? Use another and see if it really doesn't work. If your sure that it's really an issue with the headphone jack, you can get your phone repaired for free since it's still under warranty. Contact HTC to find out where you can send your phone to get it fixed.