Location in iOS Crowd-sourced Wi-Fi and cellular Location Services
If Location Services is on, your device will periodically send the geo-tagged locations of nearby Wi-Fi hotspots and cell towers to Apple to augment Apple’s crowd-sourced database of Wi-Fi hotspot and cell tower locations. If you’re traveling (for example, in a car) and Location Services is on, a GPS-enabled iOS device will also periodically send GPS locations and travel speed information to Apple to be used for building up Apple’s crowd-sourced road-traffic database. The crowd-sourced location data gathered by Apple is anonymous and encrypted. It doesn’t personally identify you. Learn more about Location Services and Privacy.
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