Possible to connect Android phone to a port on router
Sorry I violated the forum's strict posting rules....
I found answers to both my questions on a couple of other forums - so, sharing KNOWLEDGE
 1. both my son's WIKO and my SONY XPERIA XZ have reportedly had the driver removed or incapacitated in the Linux kernel and as neither phone is ROOTed there's no way strightforward way to install a driver
 2. and yes Robert, I meant the RJ45 Ethernet port