Open-AutoGLM (Phone Agent) is an AI-powered mobile automation framework that uses vision-language models to understand phone screens and execute user tasks through automated touch, swipe, and text input operations. The system works by repeatedly capturing device screenshots, sending them to a vision model (AutoGLM-Phone-9B or compatible API), parsing the model's decision into actionable commands, and executing those commands via platform-specific debugging tools (ADB for Android, HDC for HarmonyOS, WebDriverAgent for iOS). The architecture employs a device factory pattern to abstract platform differences behind a unified interface, an OpenAI-compatible model client with streaming and performance metrics, and a command-based action handler that supports tap, type, swipe, launch, back, home, long press, and takeover operations. The repository is structured as both a CLI application and a Python library, with comprehensive configuration for 50+ Android apps, 60+ HarmonyOS apps, and 100+ iOS apps, along with bilingual system prompts (Chinese/English), configurable timing parameters, and callback hooks for sensitive operation confirmation and manual intervention. Notable features include remote debugging support, verbose step-by-step execution with model thinking output, and integration with third-party model hosting services.