This should fit all iPhones compatible with the official MagSafe accessories.
The only extra requirements are 6 cylindrical magnets (6mm radius, 4mm thickness).
I recommend printing the threaded bit alone at a 0.1 - 0.15mm layer height, and the other two components at max 0.25mm layer height.
To add the magnets, figure out the way they attach to the ring of magnets by attaching them on your phone.
*Please note that they attach on both sides to the phone itself, but only on one side to the ring itself.
The magnets don't need to be glued in, as the fitting is very tight.
The threaded bit will be a very close fit, use some pliers to thread it into the foot, and then thread the star in.
I found that positioning the star with one of the magnets on top works better than positioning two magnets at the top. Use the first preview image as an example.
The author hasn't provided the model origin yet.