Hi
venkatasatishkrm007,
Is the microphone not working on specific Apps (Calls/WhatsApp Call, Gaming, etc) or across device?
You can clear cache and storage of each App
Reinstall/Enable disable App
Restart your phone once
Run SMMI test to check if this is related to hardware
How to Enter SMMI_TEST (test hardware)
Go to Calculator=>type " .12345+= "
you will be entered to SMMI_TEST