Re: 2FA
The day my bank requires me to use a phone application to access any of their services is the day I change my bank.
My banks in both the UK and Germany both require me to use a standalone physical device as well as a customer ID and the appropriate bank card to authenticate myself.
PayPal requires a message to my phone with a key to make a payment or access the account details.
But in neither case, nor any other, does any financial data ever touch the phone. Others like using their phone as a wallet but it is not for me.