Answer to: Microphone issues only with SiriSame here everybody, on my 6+, Siri and voice to text stopped working. I was told to use compressed air on the front mic that is in the ear speaker. I don't use a lot of PSI pressure, but after doing this, both Siri and voice to text start working again. I would like to mention that I have had to do this 2 times in the last 2 months. As soon as I can, I will be switching to a life-proof case. I can only hope that doing that will keep the problem from coming back. Hope this helps someone. Take care.