The OS readily reads the card in an Android phone.
It finds the Android OS on the “first plug”.
A “replug” finds the Android OS and then about a half minute later the “file system” is found.
Files are readily moved from both the phone’s file system and the sd card file system to the computer by selection in the file menu and then drag and drop to the split window, using either paste or move function.
In other words “mtp file protocol” was “solved” a few years ago but it could be “laggy” or multiple plugs and replugs were needed but for this particular OS it seems to be completely functional.
When one tries to read the same sd card from the Android phone in a “card reader”, of a variety of types, the “connected” light does indeed light up, either the older green single light or the newer “two light” type the first light shows that it is connected to a computer and then the red light is supposed to change to blue when the card is “read”. But, neither type works.
Since the mtp protocol is now fully operational there is no need to open the phone and remove the sd card and use a reader, but I thought that I would report the situation.
Kudos to the develolpers.