This document introduces the user manual of China Telecom Tianyi Navigation client, including business introduction, product features, acquisition and installation methods, subscription and cancellation methods, and client usage instructions.
The Tianyi Navigation client is a GPS‑based navigation application developed by China Telecom for Windows Mobile phones. It provides real‑time voice guidance, map browsing, point‑of‑interest search, and other travel services.
The document covers product overview, safety notices, how to download and install the client, subscription and cancellation procedures, detailed usage instructions for map, navigation, travel, voice assistant and other functions, as well as a FAQ section and a brief GPS tutorial. This manual is written in Chinese.
| Operating System | Windows Mobile |
|---|---|
| Network Requirement | China Telecom CDMA (C‑net) only |
| GPS Accuracy | ≈5 m outdoors |
| Supported Speed Range | 5 – 100 km/h |
If the CDMA network signal is poor, the client may fail to start navigation.
Open Tianyi Navigation → Personal Area → Business Subscription & Cancellation → Business Cancellation.
The navigation works normally at speeds from 5 km/h up to 100 km/h.