same thing happened to me... this headphones usually fail when u use it and place it on your jeans and the tip of the wire from the 3.5mm is bent extremely causes it to break the contact inside which is fragile...

same story happened to my bose triport IE...

anyway, ive tried using samsung's headphone+mic and it worked perfectly. dunno the model but it came with the samsung galaxy spica unit... i guess its the free headset of most of samsung now...