Check Internet connection
Log out then log back in
How to resolve Phone Burner mic issue:
Click this icon on the left side of PB address bar:Â
Then click on site settings
You will get this window:
3. Click "Delete Data"
4. Click "Reset Permissions"
5. Close all your chrome tabs and relaunch PB
6. Start dial session and it will ask for permission. Select "Allow when visiting site"