Visibility of phone to Google with secondary Play-enabled profile

Graphenator

I now use only the 'owner' profile, without Google Play. I've thought of creating a secondary profile with Google Play and a sign-in, to allow me to download the Play store apps I use only when necessary.

I understand that the owner profile would be isolated from the secondary profile, but still wonder: after I reveal the phone to Google through the secondary profile sign-in, will Google thereafter recognize the phone if I use Google Maps or Google search without a sign-in in the owner profile? As in, 'We've profiled your smartphone by your sign-in, Graphenator, and now all your bases belong to us, we'll recognize you anytime you visit one of our pages, signed-in or not, with whatever profile.'

Am I worried without reason, or ...

Ilgar

Graphenator but they identified your mobile number already, what's the question?

23Sha-ger

Graphenator Am I worried without reason, or ...

Most likely. They can know a device with the same resolution from the same IP address is accessing their services.
But you need to have a, Bin Laden threat model for them to actually look and correlate this.
https://seprand.github.io/articles/best-user-profile-setup/

Graphenator

... worried with plenty of reason, as I now believe, after discovering and reading through the recently-updated thread:

https://discuss.grapheneos.org/d/5775-device-fingerprinting-test-results-concerns-and-questions

Graphenator

They identify the mobile number from my Google Play installation and log-in in Profile 2 ... but not in the Owner profile, and nothing I do provides them the phone number while logged-in as Owner. So my original question still stands.

Ilgar

Graphenator signal has websocket notifications without gpservices and also you can have burning google account. though, for real opsec you shouldn't install sim and use airplane mode, because there is still no feature in GOS to hide number and region detection via getSimCountryIso and NetworkCountryIso

Graphenator

Thanks for the replies, 23Sha-ger and Ilgar. I'll now weigh options, make a choice, and hope I make a good one.

Ilgar

signal has websocket notifications without gpservices and also you can have burning google account.

ops, sorry, I messed with other topic and spoke about signal here, when it was not in context.

and region detection via getSimCountryIso and NetworkCountryIso

this is how google apps with network access know you're the same person behind secondary profile logged in to google play store

chinook

Ilgar This is also what X/twitter reports to the entire world (even in the secondary profiles) :)

Ilgar

chinook it has responsive website