Suitable for GPS navigation when walking on mountain roads.

Just have a mobile phone with a GPS module. It's better to have a faster mobile phone and install an Ovi interactive map. You can download Google vector map and image map, which is especially suitable for remote mountainous areas. It doesn't matter whether there is a road, whether there is a cell phone signal or whether there is an internet connection, nor does it affect the use of GPS. The operation is also relatively simple. When using GPS and maps, positioning will be completed automatically without complicated operation.

Specifically, when used in mountainous areas, 3D maps can be used at ordinary times, and image maps can be used in special circumstances or when there are no roads. Other maps do not have this function, especially the current navigation, which is prepared for self-driving and is hardly used in rural areas.