iPhone Email - Unable to verify account information

iPhone email -  "Unable to verify account information"

Problem: 
iPhone user can't connect to Exchange 2013 via iOS Mail app
 says "Unable to verify account information" on the phone.

Solution:

   Reboot Phone

    Delete Account for O365

   Make sure the user is not using WIFI / Turn off WIFI

   Bring up Safari and connect to http://outlook.office365.com

   Make sure you can logon with credentials successfully.

   Now set up the O365 Account in IOS Email. 

       Server Account: outlook.office365.com

       User:  email

  You may have to uncheck SSL and then recheck SSL

Now you should be able to logon and start receiving emails.

Turn WIFI back on.