(1) Please make sure there is no metal obstacles above the tracker. Please place the side with GPS antenna upside to the sky;

(2) Please check it at broad place;

(3) Please check if the GPS LED flash once every 3 seconds; place the tracker to other place, so as to make sure that it can receive the GPS siganl well

(4) In cloudy condition, it is a little hard to get the GPS signal, and the GPS coordinate might have some errors.