Chosen Solution

Hello. My iPhone 6s beeps on call and voice memo. On the phone, the caller cant hear me and I hear them with beeping at the earpiece. And I find voicememo only recorded beeping sound but any other sounds else. It’s ok when I take videos using front and rear camera, it is clear and Siri understands me, and I can type my voice. The loudspeaker works, I can listen to music and make a phone call using it. Does anyone have a same experience? Could you tell me your solution? I’m thinking about replacing the lightning connecter and do you guys think it will work?

I think you should open up the phone and take a look for any liquid damage inside before ordering any parts. Here is a disassembly guide to screen for reference: iPhone 6s Screen Replacement