Install Termux from the emacs Sourceforge first for userland tools. Your emacs app will share a shared app user id and signature with Termux to access its applications with a path variable in a shared home directory, so you get them both built from the same source to avoid package signature conflicts. You cannot do this with the F-Droid version of either app. Make sure your new Termux environment from sourceforge is up to date before you install emacs.

Next check out the README from https://sourceforge.net/projects/android-ports-for-gnu-emacs/files/
for further instructions. But basically grab a Termux apk and a Emacs apk from the "termux" directory in this sourceforge project for your android version. The command 'uname -m' in an adb shell will tell you your device architecture. Install and setup Termux first, then emacs. Allow management of all files in both apps with app info. Configure emacs early-init config like the README tells you, and viola. Here is a screenshot showing It works, in my current emacs phone config. You pinch zoom to resize text per buffer, and the menus work on touchscreen. Keyboard pops up when a buffer is writeable, and can be configured to be always visible. You can have modifier key mode bar buttons too.
#Emacs #Android 📲