Tianyi Navigation is a GPS navigation system with mobile phone characteristics provided by China Telecom. Through the fast and convenient operation interface, rich city navigation maps, real-time human voice broadcast as a display platform, it provides users with comfortable and convenient full-process driving navigation functions.
The Tianyi Navigation client is a BREW‑based mobile navigation application provided by China Telecom. It offers real‑time voice‑guided turn‑by‑turn directions, map browsing, traffic updates, public‑transport integration, and a voice‑assistant for restaurant, hotel and flight bookings. The manual explains how to install, subscribe, use the various functions, and manage settings.
The guide also includes safety notices, legal statements, subscription and cancellation procedures, and a detailed FAQ covering battery life, GPS accuracy, network issues, and call handling while navigating. This manual is written in Chinese.