[AceLewis]

Good question I did this once by plugging in a keyboard and mouse and using a combination of them to unlock the phone and enable onscreen dictation (meant for blind people, you move your mouse over the thing and it tells you what is under).

Mostly blind luck, clicking the windows button then typing out the unlock PIN code and enabling the voice detection via Ok Google I think although many things were tried.

Once the onscreen dictation was enabled we were able to navigate the phone by voice to do what we wanted (take all photos off it).

Edit: also some phones support video output via USB-C and then it is much easier. Unfortunately the one I was working on did not support that.