Answer to: Microphone issues only with SiriMy father had the same problem. He took it to the Apple Store and they replaced the glass screen. Apparently the 6 has three microphones and the one for Siri is the same one for face time which is located in the speaker for the ear piece next to the camera on the front of the phone. After the Apple Store replaced the screen which apparently has a new mic attached to it. The phone worked almost better than new as far as Siri goes.