Nope. I just do my banking stuff on my computer instead.
You might have some luck if you use Google Play services, but they often check if you have a custom ROM and bail if you do.
I wouldn’t give such a general statement. It really depends on your bank. There’s a very handy list at https://privsec.dev/posts/android/banking-applications-compatibility-with-grapheneos/
Fair. I thought about linking that, but so many of them either require Google Play services, at least in the US, which kind of kills half the point of using GrapheneOS in the first place.
If you’re fine with sandboxed Google Play, then yeah, there’s a chance. If you’re not (e.g. you install via Aurora), then it’s incredibly unlikely your bank will work. Looks like US Bank works w/o it though?
I can also just use stock android and assume they work. Sometimes y’all miss the forest for the trees.