Needed a desk stand for my Pocophone F1, and needed the phone to fit in it with the flip cover on.
This is designed to work with a flip cover that opens to the side (left). So that you can use the phone when it is in the stand with the flip cover on.
It will most likely fit other phones as well, at least my OnePlus5 fitted there nicely as well.
I glued four small rubber feet to the bottom to prevent it from sliding on the desk
You might want to set the support settings to 25 degrees, that seemed to work nicely in the Prusa beta version of slic3r (1.42.0-alpha) at least. I set the Contact Z Distance to 0.2 which made it fairly easy the get rid of the supports.