ASN Bank
ASN customers report that iDEAL/Wero payments in its Android app no longer work on GrapheneOS because of device-integrity checks. This concerns the payment flow, not necessarily all banking-app functions.
A customer shared an ASN response saying alternative OS support is being explored but not promised. Another shared an explanation from payment operator EPI defending Play Integrity; participants dispute its characterization of hardware attestation and note that Wero works on GrapheneOS with some other banks. The precise division of responsibility remains contested.
HN commenters debate the security trade-off and dependence on Google-controlled device certification.