Spatial audio not working on Iphone 13

I’ve recently bought airpods pro 2, and when testing all the features out I’ve noticed that spatial audio doesn’t seem to work. I’ve tried all the solutions (like checking if mono audio is on,…). I tried if the spatial audio doesn’t work on my original airpods pro because I remember it was working fine. When I did try it, it doesn’t work anymore. So my conclusion is that my Iphone is at fault. Any ideas what the problem might be?