title: Enforcing phone number in azure active directory MFA
body: <p>I have an Azure Active Directory instance where I enabled MFA using Text Messages.</p>
  
  <p>I tried logging-in using a user that has a phone number set in their profile, and was prompted with a dialog containing the user's phone number.</p>
  
  <p>The problem is that this dialog enables the user to edit this number, instead for forcing them to use the one configured in the profile.</p>
  
  <p>How can I make this dialog just use the user's phone number?</p>
  
  <p>EDIT:
  This is the configuration in the authentication section:
  <a href="https://i.stack.imgur.com/mGt4x.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/mGt4x.png" alt="enter image description here"></a></p>
  
  <p>Login process: (notice how the phone number can be changed)
  <a href="https://i.stack.imgur.com/NJzRm.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/NJzRm.png" alt="enter image description here"></a></p>