Termux — The Phone Is The Computer

 · Gifted

I do not own a laptop. Everything I build — agents, portfolio trackers, blog pipelines, cron jobs — runs from a phone. Not a "phone as a thin client" setup. The phone is the computer.

The tool that makes this possible is Termux.

What Termux Is

Termux is a Linux terminal emulator for Android. Not a VM. Not a chroot running in the background. It gives you a real shell, a real package manager (apt), and a real filesystem — all running directly on the Android kernel.

No root required. No USB debugging. No developer mode. Install from F-Droid, open the app, and you have a Debian-like environment in your pocket.

That is the pitch. The reality is even better.

What I Run on It

My daily stack looks like this:

  • Hermes Agent — my personal AI agent, serving a WebUI and Telegram bot
  • OmniRoute — routing Claude Sonnet 4.5 through free API tiers
  • ngx-portfolio — a CLI and MCP server tracking my NGX stock portfolio
  • Cron jobs — daily backups, price refreshes, document organization
  • Python tooling — managed entirely through uv with UV_LINK_MODE=copy
  • Git — pushing to private GitHub repos over SSH

All of this runs on a device I bought for NGN 85,000.

The Setup That Matters

Termux out of the box is bare. The magic is in the configuration.

First, the essentials:

pkg update && pkg upgrade
pkg install git python openssh curl wget

Then uv, which I use instead of pip:

curl -LsSf https://astral.sh/uv/install.sh | sh

I set UV_LINK_MODE=copy in my .bashrc because symlinks behave oddly on Android's filesystem:

echo 'export UV_LINK_MODE=copy' >> ~/.bashrc

For my work, I also run a proot Debian environment. This gives me a full Debian filesystem without root:

pkg install proot-distro
proot-distro install debian
proot-distro login debian

Inside proot, it is a standard Debian system. apt install works. systemctl does not (no systemd without root), but everything else does. I keep my projects at /root/projects inside proot, which maps to ~/projects in Termux.

SSH access is critical. I use it to push to GitHub, pull configs, and occasionally tunnel into other services. Setting up keys is the first thing I do on any fresh install:

ssh-keygen -t ed25519 -C "termux"
cat ~/.ssh/id_ed25519.pub

That public key goes straight into GitHub, and then the phone is a first-class git citizen.

Why Not Just Buy a Laptop?

I get this question often. The answer is simple: constraints drive creativity.

A laptop gives you 16 GB of RAM, a full desktop environment, and zero battery anxiety. It also gives you excuses. You install things you do not need. You configure services you forget about. You accumulate digital weight.

A phone forces discipline. Every package I install, I justify. Every service I run, I monitor. The battery constraint alone keeps me honest — if something is wasteful, I notice when my phone dies at 2 PM.

There is also the portability argument. My phone is always in my pocket. A laptop is in my bag, which is in my car, which is parked somewhere. The computer that is always with you beats the computer that is sometimes with you.

The Real Limitations

I will not pretend this is perfect.

Screen real estate is the obvious one. I do most of my work through Telegram notifications and the Hermes WebUI. When I need a full terminal, I am on the phone screen. It works. It is not comfortable for long sessions.

Android kills background processes. This is the biggest pain point. Termux can be killed when the system reclaims memory. I mitigate this with termux-wake-lock and by keeping services lightweight. But if you are running something that must stay alive 24/7, test it first.

No hardware acceleration. If your workflow involves GPU compute, this is not your machine. I do not train models. I run agents, scripts, and web scrapers. All CPU-bound. All fine.

Storage is limited. My phone has 128 GB. I offload media to cloud storage and keep the local filesystem lean. This is actually a feature — it forces me to treat the phone as a compute device, not a storage dump.

The Philosophy

There is a deeper point here. The tech industry wants you to believe you need more. More RAM, more cores, more devices. A MacBook Pro. A cloud server. A homelab rack.

But the most sovereign computer is the one you already own. It does not depend on a cloud provider. It does not depend on a landlord's electricity. It runs on a battery, in your pocket, and the software is free.

Termux is not a toy. It is not a "mobile development environment." It is a real Unix system that happens to run on the device in your pocket. And for the kind of work I do — writing, scripting, automating, investing — it is enough.

More than enough.

Getting Started

If you want to try this, here is the minimal path:

  1. Install Termux from F-Droid — not the Play Store version (it is outdated)
  2. Run pkg update && pkg upgrade
  3. Install what you need: pkg install git python openssh
  4. Set up SSH keys for GitHub: ssh-keygen -t ed25519
  5. Start building

You do not need to replicate my setup. You need to find what works for you. The point is not that a phone can replace a laptop. The point is that you might not need the laptop in the first place.

I run Hermes, OmniRoute, and a handful of cron jobs from a Termux session on Android. If you want to see what a phone-first development setup looks like in practice, the configs are on my GitHub.