Minimalist Ultra-Portable Folding Phone Stand

I just needed a small, folding phone stand that could slip in my laptop bag or (any pocket) while on the go between home and office. It folds flat, and holds the majority of cell phones at a decent angle.

There are 50mm and 80mm sizes. The 50mm is ultra-portable and holds any phone upright when needed, while the 80mm will match the width of most cell phones if that's preferred. Otherwise, dimensionally they are identical in all other aspects, and the hinges are made for those specific widths, not just stretched to fit.

It can hold up a phone vertically and won't tip from screen touches, although it's best situated horizontally for USB port access.

May 2022 Update:

Uploaded a 3MF containing both models, with extra ridges and curves as shown in the pictures. I didn't know that since they involved negative volumes on PrusaSlicer, they can't be exported in STL format.

Notes:

Print on the side as in the STL. Any infill and material will do. The hinges have enough tolerance for most printers, just use a bit of force to move the hinges for the first time.