I designed this for use with an ESR charger, but it turns out a lot of phone mounts/chargers use a 17mm ball joint mount.
Also has a little cutout for a small OBD2 scanner, currently using a Vgate iCar under there.
Fits my S21 Ultra with a bit of room to spare.
Printed in PLA but i highly recommend printing this in something more heat-resistant, already seeing some warping here.
Credits for the base to schuzi on thingiverse https://www.thingiverse.com/thing:2770888/files
The author marked this model as their own original creation.