iPhone15 ProMax microphone is not working in Phone app

Since last week the microphone start malfunction and when I call someone the other party cannot hear me. Other apps like WeChat, FaceTime is ok, but the phone app calls the microphone doesn’t work. The only solution is to make force restart by Volume Up, Volume Down and Side button continuously, however after some hours the problem happen again…🥲. Anyone have faced same issue, as it seems software bug