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As an administrator, you can turn mobile access on or off, and remotely manage some phone features or options. For example, you can require passwords for your users’ devices.

When mobile access is turned on, users can configure their Windows Phone, iPhone, iPad, Android phone, BlackBerry®, or other phone or tablet to send and receive Microsoft 365 email and access calendar and contacts information. Your users can also access their email on their phone or tablet by signing in to Outlook Web App.

Turn mobile access on or off

Exchange ActiveSync, which is turned on by default, turns on mobile access for Windows Phone, Apple iPhone and iPad, Android phones, and BlackBerry devices.

For BlackBerry devices, when you use Exchange ActiveSync, the only thing users will be able to do is send and receive email.

You can change your Exchange ActiveSync settings as your organization’s needs change.

Change mobile access settings for devices using Exchange ActiveSync

Mobile access is allowed by default for Exchange ActiveSync. If you want to turn off or suspend access, or turn access back on, you can do the following.

  1. In the Microsoft 365 portal, click Admin > Exchange > Mobile > Mobile device access.

  2. Under Exchange ActiveSync Access Settings, click Edit.

  3. In the Exchange ActiveSync access settings dialog box, choose one of the following:

    • Allow access

    • Block access

    • Quarantine – Let me decide to block or allow later

After you’ve enabled Exchange ActiveSync, you can quarantine or set up rules for specific devices on the Mobile device access page.

Have users set up their phone or tablet

When users sign in to the Microsoft 365 portal, they see the Get started page. Clicking Phone & tablet gets them to instructions about how to set up their devices.

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