The Beastgrip Rubber Insert v2 is specifically designed for optimizing the performance of external optics with the iPhones XS and XS Max, however, it also works great for all phones, especially dual camera models like the iPhone 7 Plus, 8 Plus, and X.
1. Remove the default rubber insert from the lens mount on the Beastgrip Pro.
2. Snap the Beastgrip Rubber Insert v2 into the lens mount on the Beastgrip Pro and align it with your phone camera(s) as shown below.
Beastgrip Rubber Insert v2 alignment with wide angle camera
Beastgrip Rubber Insert v2 alignment with telephoto camera