This is a remix of the Stem V2 from the original 3d printable cell phone tripod mount. See the original for the rest of the files, printing instructions and assembly. This is designed to be printed the same as the original, on it's side, no support needed.
https://www.printables.com/model/124924-3d-printable-cell-phone-tripod-mount
I incapsulated a nut in the original opening so you can screw this right onto a ¼ 20 UNC tripod, wall mount, or any other standard camera mount. I figured it's just a phone, it's not very heavy, PLA should be plenty strong enough to hold the weight of the phone. If you're concerned it's not sturdy enough, increase infill or please download the original file and use the proper hardware.
The author remixed this model.