The problem is probably due to some 'corrupt' geometry issues (polygon and multipolygon features in line or polygon layers). See the answer in the following thread: Gpkg and shapefiles behave differently (gpkg is not visible) in QField offline editing mode
Thank you Matthias ;-)
See the Cesium Sandcastle for an example of how to display GeoServer maps in Cesium.
Also note you will have to enable CORS on GeoServer. Search in GEOSERVER\webapps\geoserver\WEB-INF\web.xml for CORS and un-comment all CORS sections then restart GeoServer. See this question or the GeoServer Manual.
See "How to get one-meter location-accuracy from Android devices (Google I/O '18)" by Google:
It discusses use of carrier-phase measurements on Android. Requires that user turns off "duty-cycling" in developer settings, which requires Android 9 Pie or higher.
The presentation text is available at: https://www....
I'd argue that Bearing is more correct than Course in this context, although a big caveat is that I'm an Android developer. Also, the answers you get may differ depending on what industry they are coming from.
Here's a related question on aviation.stackexchange.com comparing Bearing, Course, Direction, and Heading.
Course, in the traditional sense, implies ...
According to the project page and the documentation, there is no indication that QField exists for any other architecture other than for Android, as Android is the only platform listed for download for the app. Furthermore, the GitHub repository only references build components for Android.
I had the same experience with some line and polygon GPKG layers. Not with points though, although these were from a different project.
What did help was exporting the GPKG to Shapefiles. Then Offline editing goes without any problem. It seems the solution for this particular project, although I rather work with GPKG instead of SHP.
I run qgis 3.4.15 and ...