I have followed all these steps and am getting the error "The device is unreachable".
I can see the phone in Windows 10 Explorer and can right click and "Import Pictures and Videos". It discovers lots of files, but when it tries to import it give the error: "The device is unreachable." In the past I have been able to pull photos off this iPhone XR on both my Windows 10 PC and Window 7 PC but it appears there's something different going on now (I'm assuming iOS update). Is there a known fix?
iPhone XR