Hello
Imagine having waited for a really long time to get your phone adn, suddenly, the touch screen digitzer stops working.
That's exactly what happened to me this morning.
As soon as I woke up i could not interact with the quick toggles in the notification area, or swipe away some of the notifications.
I managed to move around by using the arrow keys and with some effort, i got into developer settings and activated the touch screen reticle.
The responsiveness stops at around the volume down button going up.
I thought this was a sotware issue, rebooted a couple of times, nothing.