> A third option on Android called “Device only” location allows a user to utilize only GPS to determine location, rather than “High accuracy,” which uses GPS, wifi, Bluetooth, and cellular signals. But even when a phone is in Device-only mode, beacon information is sent to Google when Bluetooth is off (though not when scanning is also disabled). If Location is turned off entirely, and then re-enabled, the phone resets to the High accuracy mode, making the setting hard to rely on.

This was removed in Android P, unfortunately.