Show HN: I Put an AI Agent on a Nokia 110

A developer reverse-engineered a Nokia 110 4G firmware and built a native AI chat agent that runs on the handset, letting users type on the number pad to control phone functions by conversation. The prototype answers questions over the phone's SIM data, reads battery percentage, toggles the torch, initiates calls and sets alarms. The interface is a repurposed Calculator app turned into a chat client that sends messages to a DeepSeek chat API; OpenAI Codex was used during development. A demo video demonstrates the agent working while loaded into RAM and running unplugged on mobile data, but the build does not survive a restart and currently requires reloading from a computer.

The work progressed through staged reverse-engineering: an Opera Mini browser hack for AI search, then analyzing firmware and boot to run custom code via the Calculator entry point without flashing firmware, tracing modem response callbacks to get reliable SIM data replies, redesigning the calculator UI into a usable text input, and fixing drawing/style bugs. Memory constraints (48 MB) forced a tiny custom agent, compressed payloads and buffer reuse. Source code is withheld because sensitive data is embedded in the project. The result shows practical AI integration on ultra-low-resource feature phones, with permanent install and security cleanup still unresolved.