Hello, It seems we have been understanding the remote connection wrongly. Was stuck on this issue for days, and I found this hugely helpful link which mentions “from the Unity directions that you were only supposed to build the remote scene to the iOS device in order to get the remote to work. In case anyone else is hung up on this step, you need to build only the UnityARKitRemote scene to the iOS device. After that, you can change scenes in the Unity editor and play those and you’ll be able to see them in the Unity game view window running using the device camera.”
ARKit support for iOS via Unity-ARKit-Plugin page-35