Resposta para "Microphone Issues When Calling"I had the same issue. I looked into the earphone connection on my iPhone. It had a small piece of the input stuck in my iPhone I had attached to my IPhone to my speakers attached the input into my phone not realizing a piece was stuck in there! I went in look to my speakers input noticing a piece missing yeah it was way stuck in my phone lol Update (06/27/2017): It probably has a piece of input stuck in your iPhone, happened to me phone mic not working only on speaker. When I took the little piece of input that was stuck way up in my phone, it worked again!