One of the major reasons for getting BellSouth email not working on Android is the incorrect configuration settings. There may be other instances to get such a technical issue. First and foremost thing you can do is, before you open the email, check if the app or the mobile web browser is up-to-date. Next, you should check both the IMAP and POP settings to rectify. Hope it will get you on the track.
Related Post: How to Set up Bellsouth Email Account