The Teams device usage report in the Microsoft Teams admin center provides you with information about how users connect to Teams. You could run the report as follows.
- In the left navigation of the Microsoft Teams admin center, click Analytics & reports > Usage reports. On the View reports tab, under Report, select Teams device usage.
- Under Date range, select a range, and then click Run report.
For more details about Microsoft Teams analytics and reporting, you could refer to this article.
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