My government's solution to this, is a physical office, where they will file the paperwork for you. You may have an average wait time of four hours to be seen, and so must devote an entire working day to the effort, but can submit without a phone.

I'm in the process of buying a house, and getting some support from my Dad. AML checks required by app for both of us, he hated it.

I just called the solicitor, said "my Dad hates the app", they immediately presented an alternative.

And generally, 99% of stuff exists in browser. My phone is for messaging, photos, and reading, very little else.