The Helmer LK 511 operates in two ways: you call your SIM card in the tracker, and the tracker will automatically hang up and immediately send you information about its location. The advantage of this method is its speed, efficiency, and low cost (you only pay for the SMS).
The other option is to track your location via a data plan. This method is based on regularly sending detailed information about its location to a dedicated server at predefined intervals, supplemented by the ability to process the route the object was on. But that's not all the device offers.