Off an idea my friend saw on TikTok I made this model.
It is printed in two mirrored parts and glued together after.
You will need a piece of regular filament ( PLA in my case ) and one piece of flexible filament ( TPU in my case ). The PLA is used as pins through the body of the model to align the two parts correctly and the TPU as a soft cushion not to damage the phone and make sure it wont slip.
The ring holes are 22mm and 20mm in diameter.
The author marked this model as their own original creation.