Default How to replace ear speaker/mic?


I have problems with my HTC One X during phone calls.
On the other side of the call they say it sounds like I'm in "speaker mode" but am not.
On my side of the call the sound is strange. Sometimes I can not hear good. Dark and low. And sometimes its pitchy. Sorry for my bad English.

I Think my problems started when I dropped the pone.

Is the ear speaker and the mic bad or just the ear speaker?

Do you know where to find a guide on how to replace the ear speaker and/or the mic part as well?