Possible Errors: [service].Error.InvalidArguments
+ array{object} ProposeScan()
+
+ Runs a network operator scan to discover the currently
+ available operators. This operation can take several
+ seconds, and up to several minutes on some modems.
+ This can be used to help the user determine what is
+ the best operator to use if forced to roam on a
+ foreign network.
+
+ NOTE: The operator scan can interfere with any active
+ GPRS contexts. Expect the context to be unavailable
+ for the duration of the operator scan.
+
Signals PropertyChanged(string property, variant value)
This signal indicates a changed value of the given