I foolishly rooted my Galaxy S6 after 3 years of use. My phone then started reporting "unauthorised actions have been detected. Restart phone to undo these actions" This did not work. I then tried to unroot the phone using first kingo then a couple of other apps. All said "your phone is not rooted". But the security messages continued. Finally I did a factory reset - the security messages continued. The practical effect is that my banking app refuses to work. Their helpdesk says it will not work on a rooted device. Can anyone help me get out of this?