[lawn]

Kivra, BankID, Sparbanken, ICA banken, Nordea, LF, Swish, Fortnox and more works perfectly well for me.

I still keep my old phone around with BankID just to be safe, but so far I haven't had any issues.

[Tistron]

What do you mean here? Isn't bankID limited to only one device?

[lawn]

No, you can have multiple. At least with the banks I've used (currently sparbanken).