To activate texting capabilities in Microsoft Teams, each user needs a specific license called the Teams Phone Standard license.

<aside> 👉🏻 If you have an E5, A5, or G5 Microsoft license, the Microsoft Teams Phone Standard license is already included with your Microsoft subscription.

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How do I get a Teams Phone Standard License?

To purchase the license navigate to your Organization Portal and click on Marketplace.

Search for Microsoft Teams Phone Standard and click on Details

Buy licenses

Select your license count