The two parts slide together so that it can be easily taken apart to fit in a backpack or something. It's got some cutouts to run cables into the phone while in the stand and I hollowed it out a bunch to cut down on weight and save some filament. I used it as a router template with a ¼" templating bit to make one out of some ¼" thick walnut that I had.
I have also included the Solidworks and STEP files if you want to modify the design.
The author hasn't provided the model origin yet.