I am surprised that Google spends so much time tackling custom ROMs via it’s Play Integrity API. If only they paid that much attention to say, curating the Play Store more, it had be much better for everyone
Payments don’t work, because of the play integrity api. But the bank apps that I use do work, even though they didn’t in my previous phone that was running a custom ROM with magisk to hide the tampering. GrapheneOs supplies their signatures so that app developers can support it, but I imagine not all will.
For me it has been a great experience so far. Installation was easy and fast, the privacy settings are great and almost everything works for me just fine. I had a couple of issues that was able to fix by searching for it on their forums, which is quite active
Nfc payments. Google pay doesn’t work. I believe any other doesn’t work either but Im not 100% sure. I never used them