Phones use MTP protocol which is buggy and can cause data loss and due to that responsibility (and that there is little documentation on it) it is not implemented.
OneCommander will accept the filedrop from Explorer listing content of the phone, but then it is the responsibility of Explorer to manage the protocol.
You can find the related information on the post I made on GGroups
https://groups.google.com/g/onecommander/c/igMVqW-b0Qo/m/1dqwVTY8DgAJ
which includes my workaround for accessing phone storage wirelessly from One Commander.