Google to App Devs: Zero Access to Advertising ID If User Opts-Out
On June 3, 2021, Google informed app developers that beginning in late 2021, when Android 12 OS users opt-out of personalized ads, the advertising ID provided by Google Play services will not be made available to app developers for any purpose.
Google Play Apptracking Transparency Google Developer Distribution Google Play Services Oogle Play Advertising Id Advertising Id
Source: natlawreview.com