The two microphones on your XR are built into the lightning port connector assembly, and are definitely replaceable. While there isn't an iFixit guide for that on the XR (I know, I had to write the one on the X), there's a French site called SOSav that does have a decent guide for the lightning connector. You'll have to do a little mental translation on it, as the machine translation calls Phillips screws "cruciform" screws, and it calls flex cables "tablecloths", but outside of those little idiosyncrasies, the guides are generally well written and complete.
If you decide to give it a shot, be sure to stay in touch if you have any questions and we'll do what we can to help. While I personally haven't worked on a XR, I've authored several guides for the X, so I have a pretty good idea of how those phones go together.
Hi Charlie,
The two microphones on your XR are built into the lightning port connector assembly, and are definitely replaceable. While there isn't an iFixit guide for that on the XR (I know, I had to write the one on the X), there's a French site called SOSav that does have a decent guide for the lightning connector. You'll have to do a little mental translation on it, as the machine translation calls Phillips screws "cruciform" screws, and it calls flex cables "tablecloths", but outside of those little idiosyncrasies, the guides are generally well written and complete.
Here's the guide you'll need.
[link|https://www.sosav.com/guides/mobiles/iphone/iphone-xr/connector-to-load/|Charge connector iPhone XR repair - Free guide - SOSav|new_window=true]
You can buy the part right here on iFixit if you want, and it even comes in the correct color to match your phone.
[product|IF408-006|iPhone XR Lightning Connector Assembly - iFixit Store|new_window=true]
If you decide to give it a shot, be sure to stay in touch if you have any questions and we'll do what we can to help. While I personally haven't worked on a XR, I've authored several guides for the X, so I have a pretty good idea of how those phones go together.
Best of luck with your repair!