Mic not work on 10581

[WPCentral Question]

I have a Lumia 930 and after updating to build 581, the microphone stopped working. When I record video no sound, even with the volume at most (only leaves a very low static). The same applies to calls and the Cortana. When I do downgrade to WP 8.1 everything returns to normal. Someone has had the same problem or can help me?

 

[srcpt]

Check your settings at: settings, privacy, microphone

 

[Petrotec]

Its all active.