From Newsgroup: alt.privacy

Privacy: How to decouple GPS navigation from cellular geolocation.

In other words, how to decoupled GNSS navigation from tower geolocation.
This "trick" forces Google Maps to runs with satellite-only positioning.

Hotspot phone:
Exposes only tower metadata + IP, but no GNSS/location apps.
Privacy phone:
Exposes only GNSS fixes, with traffic masked behind the hotspot's IP.


Both phones are set to:
Wi-Fi scanning: OFF
Bluetooth scanning: OFF
Google Location Accuracy: OFF
No Google account and Location History: OFF

With these settings, the location teardrop tile state affects:
a. Whether apps can use GPS for location
b. But we have to have "Use precise location" on for each app to use GPS

With these settings, the cellular data tile affects
a. Just that the IP address can be geolocated

With these settings, the Wi-Fi tile state does not change
a. What's uploaded to Google (i.e., zero Wi-Fi APs)
b. What's used for location (i.e., zero Wi-Fi APs)
c. But if it connects to open access points, it can be geolocated

So turn off any capacity to accidentally connect to open APs
Settings > Connections > Wi-Fi > 3dots > Intelligent Wi-Fi
Switch to mobile data = on (affects data geolocation)
Switch to better Wi-Fi networks = on (affects wifi geolocation)
Turn WI-FI on/off automatically = off (grayed out)
Detect suspicious networks = on <== warning for open networks!

Settings > Connections > Wi-Fi > 3dots > Advanced settings
Network notification = off (ignore requests from open networks)
Manage networks (forget any open networks you've ever joined)

Unfortunately, on Android 13, you cannot selectively disable
cell-tower-based location while still using the cellular network.
a. The cellular tile will allow cell-tower fused location

We can disable Wi-Fi and Bluetooth scanning, but there's no
equivalent toggle for disabling cell tower scanning other than
turning off the cellular voice tile (which isn't practical).

The only trick I can think of is to have two phones in the car.
a. Privacy phone (cellular data & cellular voice turned off)
b. Hotspot phone (serving a hotspot over cellular data)

In this case, Google Maps on the privacy phone sees only GNSS-based
location and the cellular IP of the hotspot phone. Google Maps on
the privacy phone cannot see cell-tower IDs.

In summary, the privacy advantage of the two-phone system is that
a. There is no cell tower geolocation possible on the privacy phone
Because its cellular radio is OFF, it never registers with towers.
That means no tower IDs are available for coarse location.
b. Location is purely GNSS (satellites) + on-device sensors.
c. Google sees the hotspot phone's cellular IP address

The advantage is that you decouple navigation from cellular geolocation.
a. Google Maps on the privacy phone sees only satellite-based location
and the hotspot's geolocatable IP, not tower IDs.
b. This setup prevents tower-based location leaks on the privacy phone
while still giving the privacy phone navigation app internet access.
c. Google Maps sees the hotspot phone's cellular IP address as the source

The hotspot phone is essentially just a data pipe whose location services
don't feed into the privacy phone's GNSS-only navigation.

GNSS navigation is isolated on one device, while tower metadata stays on
the other. Both are never fused into the navigation session.
--
This is a trick. I don't expect people to do it. But it should work.
It decouples GPS location from cellular data location on Android 13.
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