How to identify horizontal or vertical plane in ARKit?

Hi,

I am using project default sample ARProject HandHeldAR. Here I am successfully access Horizontal and vertical plane.
But I want to identify plane either horizantal or vertical. I have checked online resource. But
I am not able to find solution. Please anyone come across this issue. Let me know.

Thanks.

Hey ! How did you implement vertical plane in handheld? I am using UE 4,22 but debugger does not show vertical planes however in ‘D_ARSessionConfig’ vertical plane is selected. did you change anything?