If a supervised iOS device is enrolled in your Hexnode portal, it should appear under Manage > Devices when searched using its serial number. You can also search using the IMEI if the device reports it to the portal.
To verify where the device is managed from the iPhone itself:
1. Open Settings on the iPhone.
2. Go to General > VPN & Device Management.
3. Check the installed management profile and the organization name shown there.
If the device does not appear in Hexnode and the management profile shows a different organization, the device is not enrolled in your Hexnode portal. In that case, Hexnode cannot unlock, manage, or remove restrictions from that device. You would need to check the other MDM system or contact the organization that manages the device.
Regards,
Mary Romero