In 2020 Google claimed it was supposed to be limited to a single region in partnership with a single carrier. And was never meant to be put up on Play Store.
A spokesperson from Google reached out to clarify some details about the Device Lock Controller app. To start with, Google says they launched this app in collaboration with a Kenyan carrier called Safaricom.
Google has confirmed that the Device Lock Controller app should not be listed on the Google Play Store for users in the U.S., and they will work to take down the listing.
Being Australian this is likely one to report to the ACCC, as Aussies at least have basic consumer protection, though that get murky with overseas tech entities.
Unfortunately the ACCC gives fewer fucks than you may expect. An airline once cancelled a flight on me and kept the cancellation fee, despite producing no evidence that any government had forced them to cancel the flight (this was during COVID).
ACCC did not care one bit
So while we do have some consumer protection (better than most) I would be surprised if they cared.
Check your installed apps (I left an edit in th post where to check). Just because it's not listen in the Playstore for Australia, doesn't mean it's not installed.
I still would be very surprised if this were the case. Unfortunately it seems that OxygenOS does not have public repositories to actually check the source code (!), but there are apps that will actually show you all of your installed packages and I bet one of those would show that it's installed.
So they region locked it from US, but it can still be pre-installed as a system app from AOSP. And it's available in EU, while was meant to be in Kenya only.
It's not just you, it's phoning home for me too. Pixel 7, also Australia, bought outright from officeworks. I don't log network reqs so I don't know exacts, but it's using 25kb every 3 days or so, so it's doing something.
I'm surprised it would be on the play store since presumably if you were a carrier or creditor of some kind you want this installed in a pretty clandestine way and wouldn't want to draw attention to it by having an app store listing.