I was able to successfully enable Location Display on a mapview and feed it GPS locations. I am trying to do the same now with a sceneview. SceneView has the Location Display property, however I cant seem to get it working.
Unfortunately LocationDisplay is currently not supported on SceneView. It's on the roadmap for a future release. For the upcoming 100.0 release later this year we've moved LocationDisplay from the base class down to MapView - you can see that reflected in the beta doc here: ArcGIS Runtime SDK for .Net | ArcGIS for Developers and ArcGIS Runtime SDK for Xamarin | ArcGIS for Developers.
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