I just found out that we can install and use a X11 environment within Termux!
https://wiki.termux.com/wiki/Graphical_Environment
Graphical Environment - Termux Wiki

Good enough, one can use an old Android phone as a SBC:
https://hackaday.com/2023/04/27/using-an-old-smartphone-in-place-of-a-raspberry-pi/
Nice move to something like #UpcycleAndroid.
Using An Old Smartphone In Place Of A Raspberry Pi

The Raspberry Pi was a fairly revolutionary computing device when it came on the scene around a decade ago. Enough processing power to run a full Linux desktop and plenty of GPIO meant almost certa…

Hackaday