You can try this if your offline, but still can connect to a computer.
I did this with my LG G2 with a screen that was black, BUT still has touch functions.
If, the screen is black, but the touch functions still works (this is was very important).
Connected phone via USB to the computer,
THEN...
Have two of the same phones side by side,
try to unlock by mimicking... it should show up on your computer to access the files.
Once unlocked...
With each touch take a screenshot and view where you are (access on the phone via computer, internal storage>pictures>screenshots)
You can turn on whatever you need.
I would also suggest turning on touch sounds, so you know when you are hitting a button.
I hope this helps out