Google's monopolistic stranglehold on Android results in poor experience for power-users, and artificially restricts choice for those who have older phones. For example, Google Wallet is the de facto way to use NFC payments on Android. There's one problem though - it only works with Google's Android. If you have the temerity to install a 3rd party Android OS - like the hyper-secure GrapheneOS - …
There’s precious little detail about what’s going on here, but I assume Curve’s NFC payment system hasn’t enabled Device or Strong verification like Google Wallet.
I’m honestly ok with that “lower security” as long as there are appropriate safeguards to only paying when the phone is unlocked (which it should never be outside of my control). But that itself seems to assume Curve won’t enable those things in the future, which is uncertain.