alt Hacker NewsAnother daily GrapheneOS driver here. I've kept banking apps off my phone anyway, and I do banking via desktop/website (I don't understand why people need to do banking 'on the go') and just use a physical credit card for tap payments when I'm out and about.
I do have older Android devices that I have run banking apps on, that I can revert to if necessary, but there's a fair bit of inconvenience I would be happy to endure to avoid being forced into that final option.
What I would recommend is a slow transition, and just start using it at home. If you have GrapheneOS on it's most paranoid settings (exploit protections) there will be exceptions you'll need to allow for a few apps.
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It's very country dependent. In the US, I don't think many banks do that, but I heard in Europe this is used a lot more, presumably due to more regulatory bs.
It's worth noting GrapheneOS with the locked bootloader will meet basic integrity, and that's what most apps need anyway. Strong integrity requires a whitelisted OS by Google and hardware to support it, but there are many older devices that do not meet it, so it will likely inconvenience too many people to be enforced for now.
Atleast for me I still need atleast two banking apps so I can: - Send money to friends - Deposit checks
That being said I haven't had issues with using them.