ARFoundation ARPlaneManager not detecting walls

I am using the ARFoundation ARPlaneManager with Detection Mode set to Vertical, but it doesn’t detect the wall even though I position my phone to look at only it.

I am using ARFoundation 2.1.4 and ARKit and ARCore 2.1.4

Any help is kindly appreciated!

Both ARKit and ARCore relies on feature points to detect planes. A feature point is a point with high contrast (texture details, edges, corners, etc.).

If your wall is of solid color of lacks feature points, AR system will not be able to collect enough data to detect a plane.

Please try to point your phone to something with enough details. Your monitor, for example.