I had some experience like similar before, I though of buying a new pair of fancy color earphones and they did not work on my N9 (even if they did work on my ipod). Luckily, I had the phone with me and tried another brand/model and they worked fine. Advise: go to the store with your devise and try a few until you find the right one

Btw - Later on I bought some blue cool earphones from an unknown brand which works excellent in both in my N9 & the ipod