HTC HD2 T-Mobile User Manual - Page 215

Chapter 11 Finding and Recording Places 215 • Use the GPS system cautiously. Users shall be liable for any damages resulting from negligent operation of the system. • Do not leave your phone in a vehicle or expose the phone to direct sunlight to avoid overheating the battery, which could pose damage to the phone or risk to the vehicle. • The GPS signal cannot pass through solid non-transparent objects. Signal reception may be affected by obstructions such as high-rise buildings, tunnels, bridges, forests, weather (rainy or cloudy days), etc. If the vehicle's visor contains metal, it will be difficult for the GPS signal to pass through. • Other nearby wireless communication products (such as mobile phones or radar-detecting devices) may interfere with the satellite signal, resulting in unstable signal reception. • The Global Positioning System (GPS) is built and operated by the US Defense Department. The Department is responsible for the accuracy and maintenance of the system. Any changes that the Department makes may affect the accuracy and function of the GPS system. 11.2 Downloading Location Data via QuickGPS Before using your phone for GPS navigation, open QuickGPS to download current satellite position and timing information. Downloading this satellite location data significantly speeds up the time for determining your GPS position. Your phone downloads the location data from Web servers instead of from satellites using its WiFI, ActiveSync or GPRS/3G Internet connection. 1. Tap Start > Tools > QuickGPS. 2. Tap Download on the Download satellites screen.