Solution to the hissing sound on G3 topic

I am using sony XBA-H3 , which has two kind of lines
one is with mic, four channel plug. Another is without mic, three channel plug
this solution is just for three channel plug headphones

Everything you need to do is play your music first, and then plug in your headphone which has three channel plug
the phone will detect as audio out put bet headphone(look at the small icon on the notification bar)
and then, you will find that
AMAZINGLY, THE HISSING SOUND DISAPPEARED

So, i think the issue might come from some audio process for headphone only?
But, at least, we finally got a way to listen to music on our G3
:)