The main issue is lack of banking app support for me. Without that (which the banks will never allow) you would always need two phones.
That's why I never accepted the app from my bank. It still work most of the time but it's cumbersome for some uses (like adding a new recipient for wire transfers, it takes two days).
At the risk of sounding really old can't you use your computer/laptop for that?
That's why I never accepted the app from my bank. It still work most of the time but it's cumbersome for some uses (like adding a new recipient for wire transfers, it takes two days).