If I use GrapheneOS’ Sandboxed Google Play, what data can Google see about me?
The thing with Sandboxed Google Play is, GMS can’t extract sensitive data from your host OS / change your host OS’s settings. Apps outside the Play Sandbox can’t access GMS or send your data to Google for profiling you either.
But your IP address, phone model, Gmail address, device fingerprint (if Google uses fingerprinting techniques on Android phones like how it fingerprints browsers,) and anything you do inside the sandbox will be visible to Google. Google should not be able to get your IMEI but if you are on cellular your carrier could inform Google your phone number.
Google should not be able to get your IMEI but if you are on cellular your carrier could inform Google your phone number.
Could you elaborate on this statement; provide any source?