public enum MappingDeviceLocationNavigationMode : System.Enum, System.IComparable, System.IConvertible, System.IFormattable  

var options = MapDeviceLocationService.Instance.GetDeviceLocationOptions();

var visibility = options.DeviceLocationVisibility;
var navMode = options.NavigationMode;
var trackUp = options.TrackUpNavigation;
var showBuffer = options.ShowAccuracyBuffer;

//Must be on the QueuedTask.Run()

//Check there is a source first...
if (DeviceLocationService.Instance.GetSource() == null)
  //Setting DeviceLocationOptions w/ no Device Location Source
  //Will throw an InvalidOperationException
  return;

var map = MapView.Active.Map;
if (!MapDeviceLocationService.Instance.IsDeviceLocationEnabled)
  //Setting DeviceLocationOptions w/ no Device Location Enabled
  //Will throw an InvalidOperationException
  return;

MapDeviceLocationService.Instance.SetDeviceLocationOptions(
  new MapDeviceLocationOptions()
  {
    DeviceLocationVisibility = true,
    NavigationMode = MappingDeviceLocationNavigationMode.KeepAtCenter,
    TrackUpNavigation = true
  });

var currentOptions = MapDeviceLocationService.Instance.GetDeviceLocationOptions();
if (currentOptions == null)
  return;

currentOptions.DeviceLocationVisibility = true;
currentOptions.NavigationMode = MappingDeviceLocationNavigationMode.KeepAtCenter;

await QueuedTask.Run(() =>
{
  MapDeviceLocationService.Instance.SetDeviceLocationOptions(currentOptions);
});