オリジナル投稿者： Chris Stables ,
Can Siri understand you? If she can and as you said voice memos work fine I would be leaning towards a parts problem. When I am faced with similar problems I would put the logic board into a known good housing and screen. If it acted the same you know you have a board problem. I have not uncounted an iPhone 8 that needed an audio IC repair but anything is possible.