Chosen Solution
My iPhone 6 mic not delivering full voice to other , compare to other iPhones only 50% voice other can hear compare to other iPhone. I also replace mic , along with full card with which mic is attached. What to do ., how it get solved
I’ve just had the same problem on the same iPhone model. Took the same steps and replaced the dock but without any result at all. Checked the connector on the board under a microscope and it shows no damage. Full restore didn’t bring any result either. Unfortunately I came to the conclusion that is a logic board problem, some component went bad and needs deeper diagnostic and high microsoldering repair skills.
