Main Mic Microphone Issue

[connectmansu]

Main Mic Microphone os not working while call and only the secondary mic works and the end person feels like i am on loudspeaker

Please review and update the software 

Or provide me a solution

[Gbaicu51]

Same problem here. Very bad Mic. Or soft problem!!  Same problem like Z1, after update to lollipop. Sadly, just bought this phone. Any advice please? Cheers 

[JCCCC]

I have the same issue.

Its very irritating because everyone asks me to repeat.

When will this be fixed?