I'm getting a black screen on Pixel
Google has announced some Android AR stuff so when they roll they out, we will look at making this stuff work across both platforms. Sorry it won't work for you yet!
(I'd like to read more about it, too, but your Medium link upthread is 404ing...)
here it is: https://blog.expo.io/introducing-expo-ar-mobile-augmented-re...
SE, 6s onwards has the hardware for ARKit
iPhone 6s and 6s Plus, iPhone 7 and 7 Plus, iPhone SE, iPad Pro (9.7, 10.5 or 12.9) – both first-gen and 2nd-gen, iPad (2017), iPhone 8 and 8 Plus, iPhone X
I think these are the ones, at the time of posting this comment.