I really like using a windshield phone holder in the car especially for long trips. When there's hot sun it can overheat your phone especially when it is wireless charging. I got a nice magsafe windshield mount and made this sun shade to keep my phone cool, it works a treat.

I use ASA because PLA and PETG get soft in summer car heat. No support needed for the orientation of the 3mf file. One M3x10mm+ and four M3x6mm. 

Fusion 360 CAD file include so you can modify to fit other phone holders, the one I use can be found at: https://www.amazon.com/gp/product/B09W7K7BN8/