Mobile: Register Your Device with Microsoft
This guide walks you through the steps to register your mobile device (iOS/Android) with your organization's Microsoft environment.
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Open the Authenticator app on your phone → Click the three lines in the top left corner

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Select Settings tab on left window

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Click Device Registration under Work or School Account

Note: If your device already shows as registered with your organization, no further action is needed. If it does not, proceed with the registration steps below. - Select Register Device

- Enter your organization email and click Register device → Login to your Microsoft account

Your mobile device should now be successfully registered to your organization.