First, ensure that IMAP is enabled for your account on your iPhone. If IMAP is enabled and you’re still facing any issues, switch it to POP. Make all necessary changes in the settings when you switch to POP. The next step is deleting your account and re-adding it to fix the SBCGlobal.net email not working on iPhone. If that does not work for you either, restart your iPhone; press and hold the sleep button and volume down button together to restart your phone.