If you are unable to setup Bellsouth email on iphone, follow the steps mentioned here. Go to settings. Then, scroll to and click on Mail. Then, click Accounts to show email accounts, and if there's a Bellsouth email address, delete it. Next, tap add new account and then Yahoo Mail. On the sign-in screen, enter your Bellsouth email address and lastly, click Continue to complete the process.Also Read:-Yahoo Mail Not Working