Water environment works in ARKit?

Hello, complete beginner here but have eeked out a few demos so far. I was trying to load the Water plane prefab from Environments in Standard Assets, but the water/model never showed up when I ran the build on my iPhone. I am familiar with how to attach it to the hitcube, so don't think it is that, but im definitely missing something. I saw that they said the water does not work in VR, so is it possible that it won't work in AR as well? Thanks in advance.