How to move from Personal to Business Account


I’ve started creating a personal account sometime back and it seems to be working on my iphone. I’ve not yet deposited any cash (I’m a Monzo user). I need to create an account for a new spin out ( and as Tide Bank does not allow me to operate two accounts from the same phone, here I am trying to work out whether I could use the same iphone for both personal and business account. If not, could I delete the personal account and install business account on the iphone? Would it allow me to create another account given it’s the same phone number.

Tide support is very unresponsive, so hope some of you might know the answers. Thanks in advance.