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In order to update any contact information, you can navigate to
selfservice.utulsa.edu.
On the left hand side, click on "User Options".
Then click on "User Profile".
After which, Scroll down until you see the category of contact information that you would like to edit.
For example, in order to update your phone number, scroll until you see the option to "Add a New Cell Phone" or click on the pencil icon next to your previous phone number.