This is just a little smartphone stand in an extra light version. The hole in the center gives access to the power connector of most phones. The width of 80mm fit most smartphones on the market. Maximum phone thickness is 10mm.

Print the design laying on the side. Use a raft to ensure connection to the base plate. Supports are required to bridge the gap between the two arms.
I also added a printing ready .gcode file in the Thing Files (working perfectly on my Creality CR-10S)

Enjoy printing :)