Old Zhang's AI Learning

May 15, 2026 · Artificial Intelligence

How to Use Codex on Your Phone for Free – A Step‑by‑Step Guide

This guide shows how OpenAI has embedded Codex into the ChatGPT mobile app, turning your phone into a remote control panel for a desktop‑running Codex instance, and walks through the free setup, Ollama installation, model switching, and connection workflow.