Termux + Emacs
One of the biggest advantages of Android is that it runs on Linux and Termux [1] is a very capable terminal emulator. Until pine phone (which I own for playing around on) type devices reach daily driver maturity (to use with job related corporate apps etc.) Termux is my only realistic option to run Linux terminal apps on the phone. This is where being able to use Emacs as a TUI application on Termux is great....