Keep your iPhone steady in place and out of the way on top of the car's armrest.
Fixing and removing it is easy with a Velcro support, so you won't damage the car with adhesives or holes.
Frame is a bit larger than the iPhone X so it can be still be used if you have a thin cover on the device.
Reference for the Hook and Loop Tape I used to fix the print to the car:
https://www.amazon.com/gp/product/B000078CUB/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&psc=1
Don't recommend using PLA as it might deform and warp with heat inside the car.
If possible, print the thin cover part facing down using the textured plate with a flexible material, as it will add an extra layer of padding to the device, and give a nice surface finish to the assembly
The author hasn't provided the model origin yet.