Outlook 365 Best way to share calendar and contacts?

We are a small company (10 employees) subscribed to Outlook/Exchange 365.  What is the best way to share a corporate calendar and contacts?  

We tried setting up shared mailboxes but it appears we cannot access/sync the shared mailboxes to our phones.  

Should we subscribe/buy another user/subscription and name it Corporate Calendar?
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SteveRDUAuthor Commented:
Thanks for the response.  Please let me clarify my issue.  We are already sharing a calendar via a shared mailbox.  The problem with this - it does not appear on our smart phones.
Is there a way to share a calendar (not our individual personal calendars) and have it appear on our phones?
Marwan OsmanCommented:
you must get a license for the shared mailbox:

The biggest problem of can't use mobile devices to connect shared mailbox is there is no login name and password for the online shared mailbox. For Exchange online mailbox , the shared mailbox is different with local shared mailbox. It's free and some attribute is also different with the user mailbox.

As a quick solution, you can assign a license for the shared mailbox.

Assigning license to a shared mailbox will cause the shared mailbox to be login enabled, and you can reset password for the shared mailbox. After that, you will be able to access the shared mailbox with Outlook, or mobile phone as well as a common user mailbox. However, a shared mailbox without licenses cannot be opened in mobile devices at this time. It's a client side issue, and the root cause is the mobile device doesn't support opening additional mailboxes.

Currently you can access shared mailbox with OWA in your mobile devices. Thanks for the understanding.



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