Potential support for other devices

[KleaTech]

I just got an IIIF150 B1 (weird name) phone that has a small monochrome screen on the back.

I'm wondering if there's any way to drive screens like that (currently it can only show above stuff). I tried getting some info about it with adb. I did not found it in the output of dumpsys display. wm size -d 0 shows the main screen size correctly (0 is the display id), but higher than 0 display ids gives 0x0 size. Based on this I'm thinking maybe it's not handled as a display, but some kind of a GPIO device.

Do you have any recommendation where to get more info about this screen? How did you verify that the back screen on Mi 11 Ultra is actually a registered android screen? There are several models with back screen, so any info would be helpful for other phones too.

PS.: The phone has the activities_on_secondary_displays feature, I'm not sure if that means anything.