Your GPS Tracker is completely standalone, which means that it does not work only when your smartphone is nearby contrary to Bluetooth-only trackers.
If you have the impression that your GPS Tracker only works when near your phone:
- Check that you have not placed your GPS Tracker in a place where it does not have cellular signal. For instance if you put your Tracker in a metal tube of your Bike, it can happen that it won't get cellular signal but will still be able to reach your smartphone. Never surround your GPS Tracker with metal as it won't work in case of theft.
- If it is not the case, try taking the GPS Tracker for a ride while shutting off your smartphone's Bluetooth. You will be able to check that the Tracker works properly. If not, try rebooting your Tracker by pushing the button for 5 seconds, and check AT&T's 4G coverage in your area.