Thanks,
ncmprhnsbl. SpaceFM indeed has an interesting script in >devices>settings>protocol handlers>mtp with the following comment:
"To mount mtp:// you must install jmtpfs, simple-mtpfs, mtpfs, or go-mtpfs, or add a custom protocol handler."
Perhaps I should try to install one of the "jmtpfs, simple-mtpfs, mtpfs, or go-mtpfs" because it seems my system as it is can't talk to Android. I seems to have gvfs, but it's not picking it up. I used to have something mounted automatically in
when my old Samsung S5 was connected (to my old Porteus 3.2.2 LXDE) --- now that directory is empty.
The question is should I install "jmtpfs, simple-mtpfs, mtpfs, or go-mtpfs" and which one?