Name: Your Name (What ever you want)
Email: Your username
Password: Your cox.net account password
Description:
Click Next Button
Hostname: imap.cox.net
Username: Your username
Password: Your cox.net account password
Hostname: smtp.cox.net
Username: Your username
Password: Your cox.net account password
Click Save Button
Use SSL: Yes
Authentication: Password
Server Port: 993
Use SSL: Yes
Authentication: Password
Server Port: 587
You can login cox.net and Signup for cox.net new account on your iPhone from here.