This keeps the phone at the right angle so the driver (at least one with my height and seat position :-) can look straight at the screen.
It clips to the center vents, and holds the phone by snapping to the camera lens protrusion. It holds the phone well enough for spirited driving in the twisties.
Onshape link: [https://cad.onshape.com/documents/1b456e805186ab1e8a98bfab/w/75a8fd516a3afbff595a844b/e/ce93eacf5a02301fd8254bf1]
If you fitted this on another model or model year car, let me know in the comments.