For one, it can speed up finding your location if GPS is cold. Maps will start zeroing in by using wifi while GPS is heating up and then it gets the precise lo

For one, it can speed up finding your location if GPS is cold. Maps will start zeroing in by using wifi while GPS is heating up and then it gets the precise location from gps when it is available. Googlers correct me on this, but from observation, that's how it seems to work.