@Markus Glattfelder Thanks for posting in our Q&A.
For this issue, there is no method that we can monitor the usage time of devices via intune. Currently, what we can monitor via intune is listed in the following article:
https://learn.microsoft.com/en-us/mem/intune/fundamentals/reports
If you are interested in this feature, it is suggested to contact Android support to confirm if it provides such feature to MDM.
When Android provides this MDM feature, then we can post our requirements in intune feedback portal. It is a place to collect customers' requirements and problems. Here is the link:
https://feedbackportal.microsoft.com/feedback/forum/ef1d6d38-fd1b-ec11-b6e7-0022481f8472
Thanks for your understanding and hope it will happen in the future.
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