I recently upgraded to an iPhone 12 Pro Max, and wanted a desk stand holder for the phone. This holder is sized to fit my phone in its Speck Presidio case, which has a thickness of just under 12 mm. I printed it with 3D Solutech Real White PLA on my Creality CR-10S 3D printer. The stand should work fine for any phone in a case that’s up to 12 mm thick. The stl files are available on thingiverse.