根据此Google I/O演讲:

According to this Google I/O talk : https://www.***.com/watch?v=Acdu2ZdBaZE&list=PLOU2XLYxmsILe6_eGvDN3GyiodoV3qNSC&index=28

如果在设备上启用了位置记录，则BLE扫描也将在后台进行.尽管我在文档中找不到确切的时间间隔.

If Location History is enabled on the device, BLE scan will also be done in the background. Although I cannot find the exact interval in the documentation.