An iPhone 6S/7/8 case to be printed with flexible filament. There's a thicker version and a thinner version. I recommend the thinner version because the alert slider is more accessible.
I also have cases for the iPhone 5/5S/SE
You might have to re-align the file on the buildplate in your slicer
Note: I don't have a 3D printer so I don't know the best print settings and how well the case fits. If you decide to print it, please let me know if it's good or not. I will try to keep enhancing the file if I get feedback.