Claude S40

Claude S40 is an unofficial client for the Claude AI designed to run on Nokia Series 40 phones (Java ME). It enables chat interactions with Claude through a keypad interface, displaying responses on a 240x320 screen. The app uses a custom lightweight Go server to bridge the old phone's limited networking capabilities to the modern Claude API, supporting web search, calendar entry creation, and message actions. It includes a pairing system, message history, reading mode, and UI localization in Turkish and English.