Android 4.4 is over a decade old. Modern Termux (from 2020 onwards) dropped support for it. You cannot use pkg or the default repositories. You must use a legacy version . Reviving Your Old Phone: Running Termux on Android 4.4 (KitKat) Do you have an old Samsung, HTC, or LG device collecting dust in a drawer? While modern apps have abandoned Android 4.4, you can turn that vintage device into a functional Linux command-line environment using Termux .

# Inside Termux, try to update (it will likely fail) apt update Otherwise, you need to sideload .deb files manually. What Actually Works on Android 4.4? Don't expect Python 3.11 or Node.js 20. However, these tools run surprisingly well:

Your old phone isn't e-waste; it's a command line waiting to happen.