Unsubscribe your phone

You can cancel your account anytime by simply texting stop to 51406 or you can use this form to cancel your account. If you did not sign up your phone for udefn service and are getting messages (maybe caused by number portability etc.), you can use this form to remove your phone from udefn service.

If you would like to un-register from receiving service related notifications from udefn, please visit Unsubscribe page.