I couldn't immediately find whether GrapheneOS grants READ_PRIVILEGED_PHONE_STATE to Google Play. It might very well be that the GrapheneOS sandbox spoofs a fake IMEI, and I do hope so.
In any case, my parent comment was meant for stock Pixels, as mentioned by armadyl further up in this thread.
In any case, my parent comment was meant for stock Pixels, as mentioned by armadyl further up in this thread.