HUANUO Stand Mobile Phone Mount for OnePlus 3
Mobile Phone mount for HUANUO Dual Monitor Stand.
Designed primarily for OnePlus 3.
I think the design could do with a wider base for holding the phone.
I printed this at 0.3 resolution
Feel free to edit this to suit your requirements:
https://www.tinkercad.com/things/j6x5YEIgzbC