If you want to change your phone number on Sprint, you have a new option. Not only is it an easier option, but it’s also free. You can change your number online in your account settings, avoiding the $15 fee that’s associated with changing it and not having to call anyone or leave the house. Quite nice of Sprint, though I’m sure they benefit from getting a lot less calls for this purpose.
If you ever want to change your number (to get rid of that pesky ex maybe?), go to this page to do it.