This is for a cheap tripod, so check that the shoe is the right size for yours. (Others I've downloaded were too big for mine.) The shoe is 35mm at the bottom.
Designed to slide over a Samsung Galaxy 6 without pressing the buttons or hitting the camera lens (that sticks out a bit). It's snug, but doesn't scratch the case or anything.
It may print looser or tighter on other printers, depending on how well you've mastered your settings for accurate interior dimensions. (Mine are lackluster.)
Print this laying on it's side. That will make the perimeters oriented to go around the thin parts, making them not snap off easily.
You may want to force supports. Slic3r didn't think it needed them for the angle beneath the shoe, but without them it didn't adhere to the bed well for me.