Car magsafe phone holder small/thin

Hi,

I designed a magnetic phone holder for the ventilation grill. I tested the holder in a Volvo and a Toyota. It holds firmly everywhere without a problem. Phone in the photo Xiaomi 13T with a ring stuck on the back. There are 18 round magnets 5x2mm in the body of the holder. I chose the black ASA material.

The magnet cover must be printed with a maximum layer of 0.12 mm so that there is as little material as possible in front of the magnets. The holder itself is not a problem to print with a layer of 0.20 mm.

Thank you for any feedback.