Well iv had my new One X for about a week now and in the last couple of days I have been having some problems with my microphone when calling people.

I can hear them clearly throughout the call but randomly during the call they can't hear me at some points. They say it starts with my voice becoming faint and then going completely with it slowly coming back to normal.

As anyone else come across this problem or something similar? Any advice or held would be usefull or I am going to have to think about returning phone for one that actually works.

Hi Marcus. Did you manage to solve your problem? Have you experienced maybe something like this:
http://www.htconexforum.net/htc-One S-xe-help-desk/htc-One S-xe-mute-on-answer/

That's my problem.