Changing Your Phone Number
How to change your Phone Number in the new Student Profile tab
First, open the Profile tab in your myBYUI page and click on the "Phone Numbers" option underneath the "Demographic Profile" dialogue box.
Next, select the "Update" option next to the number you wish to change. In the dialogue box that pops up, type in the new phone number you want to add and click "OK."
Click "OK" again. You're Done!