[UnreachableCode]

No, because most banking apps call upon the Google Play Integrity API, which GrapheneOS doesn't (or can't?) use. There's a decent list kicking around of which ones work (Monzo, for instance).

https://privsec.dev/posts/android/banking-applications-compa...

[tranq_cassowary]

It's more common in banking apps than in other apps to implement Play Integrity but it's cetainly not "most banks" that do it. It's still only a small subset. Sucks of course if it's your bank.

[UnreachableCode]

Maybe not in your region, but here in the UK I think the majority of high street banks do not function on GrapheneOS.