Striped phone stand

For my Xiaomi redmi 4x with jelly case covered.
Always annoyed by my phone stand blocking bottom screen, I decided to make my own.
(Thus this phone stand is slippery than the others. use at your own risk :)
Original design has no stripes, but it's boring and waste of plastic.
So I decided to put stripes on it, I had much fun doing it.

EDIT : Fixed many design flaws.(v3, final version)

Designed with Onshape.