Phones use obsolete MTP protocol which is not natively supported in OneCommander. Reasons and workaround using FTP can be found here https://groups.google.com/g/onecommander/c/igMVqW-b0Qo/m/1dqwVTY8DgAJ
NEW WAY
In ~November 2024 Microsoft updated Phone Link app to allow wireless access to your Android phone files (not sure if iPhones have similar app)
There's a bunch of youtube videos on this https://youtu.be/7jdcTOrk_Ro?t=77