Chosen Solution
I’ve changed the charging port on a 6s and when I checked it everything was working as it should, now the mic has stopped working on calls. I can be heard when in loud speaker and hands free only, there was a metal shim on the mic at the right of the port that I couldn’t get off the old one so I hadn’t replaced it. Could this be causing the issue?
I recommend testing the charging ports before install, most functionality coming from it if possible. Sounds like a faulty charging port (main microphones on the port not working). I suppose it could of went faulty from being improperly installed (tear in ribbon cable / puncture). I have replaced them before, but not really sure what metal shim you are referring to. Are you referring to this in step 46: iPhone 6s Lightning Connector Assembly Replacement There is black tape covering a screw hole for a metal cover for an antenna cable.
