The author remixed this model.
The excellent MagSafe Proclip Mount design by frez_knee had a couple of drawbacks for me:
After upgrading to an iPhone 14 from an iPhone 11, I had a spare phone holder which didn't quite hold the phone as well as I wanted it to. Since the holder had a tilt/swivel joint on the back, I designed an adapter plate for it.
With that, you can take the holder itself off, but keep the ball joint, which gives you a bit more freedom in angling your phone.
To make it work, you will need
Everything should be press-fit, but you may need to play with the tolerances. I printed this on a 0.6mm nozzle so my tolerances might be a bit tighter.
I've also kept the magnets exposed, since I like the aesthetic more (and if I cock it up, it makes it easier to remove them using a pair of sidecutters and a lot of swearing while I cut through the plastic).