And right now the only phone with them and that has a usable API is apparently the iPhone.
This was covered in a walkthrough with a VR YouTuber: https://www.youtube.com/watch?v=yvih_ljVc_w
Fortunately, I can borrow an iPhone from work
That may have been the case around 5+ years ago when flagship Samsung phones were significantly cheaper than iPhones. Then Samsung (for example) moved away from plastic screens and chassis to glass and aluminum, the prices went up.
Here in Australia the flagship iPhone 14 pro is from $1,899 with the flagship Samsung $1,949. With the Samsung fold at a whopping $2,499.
A normal Samsung S23 and iPhone 14 both go for the same price.
Of course we're just talking flagships, with both brands offering lower priced phones around that half price.