TL;DR
- Efforts like Graphene OS face increasing pressure from apps that refuse to run on non-standard Android.
- The custom ROM project characterizes Google’s approach to device attestation as incomplete and flawed.
- Graphene OS is prepared to take legal action if Google won’t let it pass Play Integrity checks.
NFC works. NFC payment is dependent on the app as some block those that fail Play Integrity / Google certification. Google Wallet / Pay does not work for payment because Google blocks it.
I’m aware, I assumed being able to install sandboxed Google services would allow Google Wallet to pass, unlike on CalyxOS, but I might be wrong.