Works great in PLA, PLA+, and PETG, would recommend printing at ca. 103%Z-scaling so the phone fits properly.
Bonus-Tip: If you print the case with 10ish vertical shells, but 0 top and bottom layers, you can let the infill (e.g. Honeycomb at 7% density) show through for a free honeycomb pattern that also helps with grip.
The author remixed this model.
Modified STL model to allow for button access by adding cutouts, also printed it and tested it, found a Z scaling of 103% to work best regarding fit, also recommend printing with 0 top and bottom layers and honeycomb infill, to get a honeycomb backplate pattern