What is a 3DC file?
A 3DC file is a GPS data file used by the GPS navigation software application, iGO. It contains 3D building data information along with metadata for application display. 3DC files are saved to the memory card of the navigation unit and are mostly stored to the \iGO\content\building\ directory.
About iGO Navigation
iGO software is used for navigation purposes. It gets user’s location information using GPS devices and helps in navigation using 3D maps and routes. It is available for Android, iOS, and other popular handheld devices. In addition to its navigation features, iGO software also provides offline storage of maps in case users find it difficult to connect to the internet for real-time map data.