Using network location effectively means streaming your location to Google any time any app is using the geolocation APIs. The way it gets a location so quickly

Using network location effectively means streaming your location to Google any time any app is using the geolocation APIs. The way it gets a location so quickly and power-efficiently is by scanning for nearby wifi networks and asking Google's servers where it could be. When you have a splic location lock, it sends its location along with nearby wifi networks to Google so they can update their database.