Duo Restore for iOS June 16, 2022 15:31 Duo Mobile's restore functionality lets you back up Duo-protected accounts. For more information click here. Related articles Duo is prompting for a bypass code Add new phone to DUO mobile with the same phone number. I don't have a phone or access to a phone for DUO. Hardware tokens are available. Claim your NUID. Enroll in Duo two-factor authentication