How do I change my phone number once I have been migrated?

To change your phone number once you have been migrated, follow these steps:

1. 1. 1. 1. Sign into Office 365 at https://office.com.
         2. In the upper right corner, click your profile picture and select My Account.
            
         3. On the left hand side bar select Security Info. At this point it may send you a validation text message. Then on the next page select Change.
            
         4. Alternatively, you can go to https://mysignins.microsoft.com/security-info to update your number as well.