The map database of the car navigation system comes from a variety of channels. The most important source in the meantime is the supplied block database.

Satellite signals are the basis of GPS for on-board navigation for positioning and navigation. If you can't search for satellite signals, then GPS can't perf...

In general, the car navigation system has an endurance of about 1-2 hours, so when driving long distances, you need to use a car power supply.

How to add songs in car navigation, how to save songs in the large screen of the control.

Because car navigation is performed by GPS satellite positioning, no internet connection is required when using car navigation.