After unlocking your iPhone, then go to the options of Settings.
Click the options of mail which is present at the bottom of menu.
Choose the options of add account with the help of drop down menu.
Click the button of add account once more.
Choose the options of other and then select the options of add mail account.
Fill in the blanks with the name and description of the SBCGlobal email account.
Follow above given steps to Set up Set up SBCGlobal Email on iPhone. See Also this post:- https://writeapp.me/datarecovo/note/11-steps-to-set-up-sbcglobal-email-account-on-iphone-ipad