Quesetion: What features are included in Device-Only subscription

This website contains the information: Purchase device licenses in Microsoft Intune - Intune | Microsoft Docs

 

Limitations

When a device is enrolled by using a device license, the following Intune functions aren't supported:

• Intune app protection policies
• Conditional access
• User-based management features, such as email and calendaring.

Other than the mentioned limitations, all intune funtionality is included.