iFixit has some close-up photos of the Galaxy S9’s aperture blades
https://www.theverge.com/circuitbreaker/2018/3/12/17111318/ifixit-samsung-galaxy-s9-teardown-aperture-close-up
The only things that actually move on a modern smartphone these days are the silencing switch, the lock button, a volume rocker, and (if you’re lucky) a dedicated button for Bixby.
So it’s natural that we’re a little curious to see how the Samsung Galaxy S9’s new dual aperture works. Lucky for us, iFixit’s requisite teardown of the phone includes a couple of close-up shots of the aperture in action.