Delete phoneAuthenticationMethod

Namespace: microsoft.graph


APIs under the /beta version in Microsoft Graph are subject to change. Use of these APIs in production applications is not supported. To determine whether an API is available in v1.0, use the Version selector.

Delete a user's phone authentication method.

Note: This removes the phone number from the user and they will no longer be able to use the number for authentication, whether via SMS or voice calls.

Remember that a user cannot have an alternateMobile number without a mobile number. If you want to remove a mobile number from a user that also has an alternateMobile number, first update the mobile number to the new number, then delete the alternateMobile number.

If the phone number is the user's default Azure multi-factor authentication (MFA) authentication method, it cannot be deleted. Have the user change their default authentication method, and then delete the number.


One of the following permissions is required to call this API. To learn more, including how to choose permissions, see Permissions.

Permissions acting on self

Permission type Permissions (from least to most privileged)
Delegated (work or school account) UserAuthenticationMethod.ReadWrite
Delegated (personal Microsoft account) Not supported.
Application Not supported.

Permissions acting on other users

Permission type Permissions (from least to most privileged)
Delegated (work or school account) UserAuthenticationMethod.ReadWrite.All
Delegated (personal Microsoft account) Not supported.
Application UserAuthenticationMethod.ReadWrite.All

For delegated scenarios where an admin is acting on another user, the admin needs one of the following roles:

  • Global admin
  • Privileged authentication admin
  • Authentication admin

HTTP request

DELETE /me/authentication/phoneMethods/{id}
DELETE /users/{id | userPrincipalName}/authentication/phoneMethods/{id}

The value of id corresponding to the phoneType to delete is one of the following:

  • b6332ec1-7057-4abe-9331-3d72feddfe41 to delete the alternateMobile phoneType.
  • e37fc753-ff3b-4958-9484-eaa9425c82bc to delete the office phoneType.
  • 3179e48a-750b-4051-897c-87b9720928f7 to delete the mobile phoneType.

Request headers

Name Description
Authorization Bearer {token}. Required.

Request body

Do not supply a request body for this method.


If successful, this method returns a 204 No Content response code. It does not return anything in the response body.



The following is an example of the request.



The following is an example of the response.

HTTP/1.1 204 No Content