There is no maximum range. You could even be in a different country from the tracker itself and you would still be able to see it from your app.
Trax uses satellite technology to determine its location, and GPRS networks to send that information to our server.
Your Trax does not need to be located at a minimum or maximum distance from your phone. As long as the tracker is physically in one of the countries we support, and has GPS & GPRS connection it will send its location to the mobile app.