This is how I did it. I borrow a phone that was the exact same model as mine, then hooked up a usb keyboard and memorized the exact series of steps needed to launch a remote screen viewing program. One thing that made this easier was using the google play store to remotely install the screen viewing program. Then I typed out the exact series of key presses that I needed to turn it on. Took me like 4 tries to type in the lock screen password and get the screen mirroring started.