1. Switch On GPS. Go to Tools and double touch at tools.
2. Next double touch at GPS Test
3. Click at GPS RESET. First it will detect as much gps satellites. At this stage Latitude and longitude is zero because it still can’t get more gps satellites signal to detect you current location.
4. After you get your current location for latitude and longitude. The gps test is done. Now you can go to main gps to navigate to your place.