If you are facing the SBCGlobal email not working issue on iPhone, here are the steps:
Step 1: First, go to “Settings“.
Step 2: Then press “Mail“
Step 3: Tap Accounts.
Step 4: Press “Include Accounts” again
Step 5: Choose other, and then choose Include Email Account.
Step 6: Enter the name and description.
Step 7: In the Email and Password field, enter the SBCGlobal email address and password.
Step 8: Then tap the POP at the top of the screen.
Step 9: Update the incoming mail server as inbound.att.net
Step 10: Re-enter the SBCGlobal email address and password and click next.
Step 11: Update the outgoing mail server as outbound.att.net
Step 12: Re-enter the SBCGlobal email address and password.
Step 13: Finally, press “Save” and now your iPhone has been configured to access the SBCGlobal.net email account.