iPhone 7 microphone is not working after iOS 14.6 upgrade

iPhone 7 microphone is not working after iOS 14.6 upgrade . Tried all possibilities like restart, restore , app that using in microphone setting nothing helps. Unable to make any call , FaceTime , whatsapp call, voice recording . Nothing working related to microphone. Please help to resolve this issue ASAP . It really making life worst at this COVID situation .