Two iPhones with the same access to emails, photos etc.
I purchased a new iPhone 12 Mini, so my wife wanted my old iPhone SE5 1st Gen, I took the Sim Card from her Samsung and placed it into the iPhone SE and went about setting her up with a new email account so she could use emails etc.
I have now found that her email address has taken over all my apple devices, and I can't resolve this issue, bear in mind I do not use iCloud. I have spent hours trying to get this corrected but to no avail, I now have iMac, Workbook Pro, two iPads, two iPhones and an iPod all using my wife's email address. please help, the sledge hammer may be the only alternative!!
iPhone 12 mini, iOS 14