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phoneauthenticationmethod-delete.md

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title Delete phoneAuthenticationMethod
description Delete a user's phone authentication method.
ms.localizationpriority medium
author luc-msft
ms.reviewer intelligentaccesspm
ms.subservice entra-sign-in
doc_type apiPageType
ms.date 07/31/2025

Delete phoneAuthenticationMethod

Namespace: microsoft.graph

Delete a user's phone authentication method. This removes the phone number from the user and they'll no longer be able to use the number for authentication, whether via SMS or voice calls.

A user can't 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 can't be deleted. Have the user change their default authentication method, and then delete the number.

[!INCLUDE national-cloud-support]

Permissions

Choose the permission or permissions marked as least privileged for this API. Use a higher privileged permission or permissions only if your app requires it. For details about delegated and application permissions, see Permission types. To learn more about these permissions, see the permissions reference.

[!INCLUDE permissions-table]

[!INCLUDE rbac-authentication-methods-apis-write-others]

HTTP request

Delete your own phone authentication method.

[!INCLUDE me-apis-sign-in-note]

DELETE /me/authentication/phoneMethods/{phoneMethodId}

Delete your own or another user's phone authentication method.

[!INCLUDE authentication-methods-apis-users-selfservice]

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

The value of phoneMethodId 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. Learn more about authentication and authorization.

Request body

Don't supply a request body for this method.

Response

If successful, this method returns a 204 No Content response code. It doesn't return anything in the response body.

Examples

Request

Here's an example of the request.

HTTP

DELETE https://graph.microsoft.com/v1.0/me/authentication/phoneMethods/3179e48a-750b-4051-897c-87b9720928f7

C#

[!INCLUDE sample-code] [!INCLUDE sdk-documentation]

Go

[!INCLUDE sample-code] [!INCLUDE sdk-documentation]

Java

[!INCLUDE sample-code] [!INCLUDE sdk-documentation]

JavaScript

[!INCLUDE sample-code] [!INCLUDE sdk-documentation]

PHP

[!INCLUDE sample-code] [!INCLUDE sdk-documentation]

PowerShell

[!INCLUDE sample-code] [!INCLUDE sdk-documentation]

Python

[!INCLUDE sample-code] [!INCLUDE sdk-documentation]

Response

Here's an example of the response.

HTTP/1.1 204 No Content