Project Log #21: The Grand Finale. We Shipped. (Plus: Full Setup Guide)

21 build logs. Months of work. One shipped project. Here's the full journey—and how to set up the Phone Agent on your own device. The first build log was published months ago. "I'm building an AI agent that controls a phone." No code. No repo. Just an idea and a cracked phone. Today, after 21 build logs spread across months, the project is shipped. This wasn't a straight line. There were gaps. Weeks where the log went silent—not because the work stopped, but because life doesn't pause for build logs. I took breaks to survive exam season. I paused to ship 9 portfolio websites. I stepped away when the code refused to cooperate and my brain needed rest. But every time I came back, the agent was still there. Waiting. And every log picked up where the last one left off. What We Built An autonomous AI agent that controls an Android phone using natural language commands. It can parse your words into actions, read the screen, tap buttons, type text, switch between apps, verify financial data, and serve a web interface—all offline. The Real Timeline Phase What Happened Days 1-4 Foundation. Gemma 4 + ADB. First working pipeline. Days 5-8 Vision overhaul. UI tree. OCR. Template matching. Days 9-12 Accessibility audit. 30 apps scored. Days 13-16 Multi-app workflows. Task memory. Home reset. Days 17-19 Financial verification. Accuracy from 80% to 94%. Breaks Exams. Portfolio sites. Life. Days 20-21 Web interface. Flask backend. Shipped. 📖 FULL SETUP GUIDE: How to Install and Use the Phone Agent Follow these steps to get the agent running on your own Android phone. Prerequisites An Android phone (Android 7 or later) At least 6GB of free storage space A WiFi connection for the initial download Step 1: Install Termux Do NOT install Termux from the Google Play Store—that version is outdated. Install it from F-Droid instead. Open your phone's browser Go to f-droid.org Download and install the F-Droid app Open F-Droid and search for "Termux" Install Termux from F-Droid Step 2: Set Up