If you choose to enable Improve Maps, Apple will collect the GPS coordinates obtained through the Significant Locations feature on your device and correlate them with the street address associated with your Apple ID. This will enable Apple to better approximate the geographic location of that and other addresses. Apple will only retain the resulting coordinates in an anonymous form to improve Maps and other Apple location-based products and services. You can turn off Improve Maps or Significant Locations at any time under Settings > Privacy > Location Services > System Services.
Improve Maps & Privacy
Apple Maps is designed to protect your information and enable you to choose what you share.
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