Why Bellsouth not working on iOS?
It is quite difficult to find the particular reason behind such problems. However, there are some common issues that generally cause this type of problems.
Incorrect configuration of Bellsouth email in iOS.
The operating system of iPhone you are using is not compatible with the Bellsouth Email.
You are using the outdated server settings.
Malware or Virus infections might be causing the hindrance in the work flow of Bellsouth Email on iPhone.