Use a head strap or head mount designed for smartphones
Choose an iPhone-compatible phone holder or adapter
Attach the holder securely to the head strap
Insert the iPhone into the holder and tighten the grip
Adjust the angle so the camera or screen faces the desired direction
Make sure the mount is stable before moving
Use a protective case if needed for a better fit
Check that buttons, ports, and lenses are not blocked
Tighten all straps and locks before use
Test the setup with light movement before full use