Wi-Fi and Bluetooth scanning for improving location detection are disabled by - default, unlike the stock OS. These can be toggled in Settings ➔ Location ➔ Wi-Fi and - Bluetooth scanning. These features enable scanning even when Wi-Fi or Bluetooth is - disabled, so these need to be kept disabled to fully disable the radios when Wi-Fi and - Bluetooth are disabled. GrapheneOS doesn't yet have an implementation of a coarse + default, unlike the stock OS. These can be toggled in Settings ➔ Location ➔ Location + Services ➔ Wi-Fi and Bluetooth scanning. These features enable scanning even when Wi-Fi or + Bluetooth is disabled, so these need to be kept disabled to fully disable the radios when + Wi-Fi and Bluetooth are disabled. GrapheneOS doesn't yet have an implementation of a coarse location service to supplement GPS location, so enabling these options doesn't actually do anything at the moment. Implementing a supplementary location service is planned but we need a robust, secure and private implementation via a local database.