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Add your phone number to a Microsoft account

Like most consumer communication apps, Teams for Personal Life relies on your cell phone number to find and stay connected with friends and family. Adding a cell phone number to your Microsoft account can help you find other people who are already on Teams. It also adds an extra layer of security to your Microsoft account.

When you sign in to Teams with your personal Microsoft account, you'll need a cell phone number as a sign-in alias for that account. Only a cell phone number can be used as a login alias because when logging in with a cell phone number we need to know which account it is used for.

If you're asked to add a cell phone number to your Microsoft account when you sign in to Teams, you'll need to:

  1. Make sure the correct country is selected from the drop-down menu.

  2. Enter your full mobile phone number without the country code, and select "Next".

  3. You will receive a text message with a verification code, enter it and choose "Next".

If the cell phone number is not already an alias for another Microsoft account, it will be added as an alias to your Microsoft account and you can use it to sign in to your account in the future.

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For more help, contact support or ask a question in the Microsoft Teams Community.