LG ms323 strange issue with louspeaker calls
 

When you dial a call and activate loudspeaker mode the microphone will not work, so othe rperson will not hear you.

But If you receive the call and activate the loudspeaker mode, the microphone works ok.

on normal calls, the microphone also works both dial in and dial out.

I flashed the Set, and same issue remains.

any hints ?