I also had a similar problem, but Digitec was unable to help me. But you can try the Logitech support page: support.logitech.com/en_ch/product/stereo-headset-h390

The headset also works under Linux. It is compatible with Linux as well as Windows, macOS and ChromeOS and requires no additional drivers (plug and play). It can therefore be used without any problems.

The Logitech H390 headset (Wired, USB-A) is generally compatible with most computers, regardless of manufacturer, as long as they have a USB-A port. This means that it can be used with computers from a variety of manufacturers, such as Dell, HP, Lenovo, or Apple, as long as they have an available USB-A port.

I think rather not. The Logitech H390 (cable) must be connected via a USB type A (large and wide). I don't think the XPhone has such a connection.