I have a OnePlus 6 smartphone and I recently opened a bank account in a bank which seems to me very innovative in the context going payment card (debit/credit) free (using only application and/or cash).
It will not necessarily be my main bank account and as of now I don't see myself putting most of my money there, but I want to put there about 2,000 USD for now.
I have the bank application on my smartphone and I can pay worldwide with it with no fees/commissions via QR code until a generous amount.
My smartphone barely has any applications installed besides WhatsApp and Gmail.
I don't use a PIN code on my Smartphones for about 10 years now (I do use a PIN code for bank application though). I also never used fingerprint in my smartphone.
My question
What security measures should I take to secure my smartphone properly if I go payment card free and manage all payments, worldwide, by smartphone?
Update
I take back the notion (if I ever published here one) that one should go payment card free; I had two cases - one outside the country of the aforementioned bank, where my account was locked (due to some dual SIM card related behavior) and the application's mechanism to unlock it was very unintuitive and inconvenient to utilize so in that case, if I would have been only with my smartphone and lose all cash, I would not be able to handle economically easily.
Therefore, I advise against that method; I personally believe that the method of Smartphone as primary economic instrument with payment card as secondary (and reserve) economic instrument, with no cash at all; is best --- but I might be wrong.
