If your car device does not receive satellite signals, please determine if the problem is caused by your environment.
When the GPS device is used, data is collected to find the satellite signal more quickly the next time it is turned on. If a device is used every day, It should be able to find satellite signals within 1 minute. The use of a GPS device in an open and visible sky is the most ideal state for obtaining satellite signals.
There are several factors that can cause GPS devices to fail to obtain satellite signals: If your device is going to get a satellite signal for the first time, it may take longer than usual to establish the initial position. If the unit is turned on in an open space, this procedure should not exceed 3 to 5 minutes. If your device does not see the sky in the car, you may not be able to get the satellite signal correctly. In order to optimize satellite reception, it is recommended that you place the unit on the windshield above the dashboard. If your device has not been used for a long time (more than a month), it may take 3 to 5 minutes to regain the satellite signal. If your device is indoors, you may not be able to get satellite signals. Even in the indoor window, most of the sky will be blocked, and the device will not be able to lock the satellite signal. If your device is off or not enabled and the driving range exceeds 804 km (500 哩), it may take 3 to 5 minutes to regain the satellite signal. If there is a protective film on your vehicle's windshield, or if there are electronic devices on the car that can affect the device's reception signal, your device may not be able to obtain satellite signals in this environment. Some vehicles have a special windshield that contains a metallic component (iron oxide) that blocks the view between the GPS unit and the sky. (Other windshields such as gray-black glass, heat-reflecting glass, defogging glass, insulating glass, etc. may also affect satellite signal reception.) If you suspect this is the problem, try taking the device out of the open air outside the car, visible in the sky for 3 to 5 minutes, and let the device receive the satellite signal. (If your device loses satellite signals when you move back into the car, this is probably the problem.)