Hi SamJ
Please check if these reports have your information
- Intune, in the app pane, you’ll find an overview of device status and user status https://learn.microsoft.com/en-us/mem/intune/apps/apps-monitor
- Teams device usage report covers Windows, Mac, iOS, and Android users https://learn.microsoft.com/en-us/microsoftteams/teams-analytics-and-reports/teams-reporting-reference