Open "Settings" and launch the "General" control panel.
Select the "Profiles" panel
Select the Harvard Secure" and/or "Eduroam" profile, click the "Delete Profile" button at the bottom.
If you have no "Harvard Secure" or "Eduroam" profiles, you can skip to the next step.
You will then be prompted for your iPhone (or iPad) passcode.
Then confirm the deletion by clicking the "Delete" button.
Launch Safari and open http://getonline.harvard.edu.
Choose "I Have a HarvardKey" and you should be directed to the next page.
To select your network, choose "Harvard Secure" (or "Eduroam" -- if you are part of the Eduroam program) and you should be directed to the next page.
Your iOS system should be automatically detected. If it was incorrectly detected, you can select the correct system in the drop-down box at the bottom of the page.
When ready, click the "JoinNow" button to continue.
Click the "Install" button in the upper-right corner of your screen.
Enter your iOS passcode to authorize the installation of the profile.
Click the "Install" button to confirm installation.
Click the "Done" button to move to the next step.
When prompted, enter your HarvardKey and Password and click "Next".
And you're done!