I dunno the answer to your question but maybe use orgzly on android instead. It mostly works OK but to be honest, I mainly only use it read-only. I use syncthing to synchronise to linux org files.

Also - how the heck would you use a keyboard-driven application like emacs without a (proper) keyboard? It sounds like punishment.

Did you try outline-minor-mode ?

I like the vertical bars outlining the function structures - how is that done?