A crude but effective bike mount for a Samsung Galaxy S7 with Spigen Rugged Armor Galaxy S7 Case. Glue the mount piece to the back of the cradle piece after printing.
Use a gopro bike mount, or what ever gopro mount you want ;)
This thing was made with Tinkercad. Edit it online https://www.tinkercad.com/things/5ez9NoJcVHn