Please sanity-check my plan

Hi r/starlingbankuk,

I'd be most grateful if you could lend your experience with starling bank to sense check my plan:

I currently use a debit card for everything but I realise if my card ever breaks while im out and about I dont have a backup. So I'm planning to set up a starling current account to use the card for day-to-day purchases and keep my debit as a backup. I like the sound of the zero fees for use abroad + the current account interest.

The only issue I have is that I want to avoid using banking apps on my phone (I'm paranoid about losing it or getting hacked since I often use public wifis).

I know starling allows desktop use but you need to verify your login with the app, so the app is unavoidable. I'm planning to install the app on my old phone (which is factory reset so I know it's secure) and then leave this old phone at home along with my other financial stuff. I'd then use the old phone to login to desktop when I need to transfer funds over from my primary (debit) account.

Would leaving the phone with app installed at home impede my use of a starling card for day-to-day use? And are there any other factors I'm overlooking?

Any wisdom would be greatly appreciated!

Cheers!