A mobile device includes a stereoscopic camera that generates 3D image data of a surrounding environment of the mobile device, a GPS module that determines a GPS location of the surrounding environment, a communication module that receives from a remote server a map of the surrounding environment based on the GPS location of the surrounding environment, and a processor. The processor determines a location of at least one object in the surrounding environment based on the 3D image data, compares the map of the surrounding environment with the location of the at least one object in the surrounding environment, and determines a current location of the mobile device on the map within the surrounding environment based on the comparison.