It is being reported on the QRP Labs forum, that some have got the little smart QDX digital transceiver communicating with the FT8CN app.
The rig is noticed straight away by FT8CN using an OTG USB lead and a minimum of configuring.
The QDX and a small phone or tablet, allow true FT8 portable operating with minimum hardware to cart around.
Pick up the thread here
Details about the QDX https://qrp-labs.com/qdx.html