What is the best-selling app of China Telecom?

Enterprise communication software. China Telecom Premium app aims to provide enterprises with more efficient and convenient communication services. The software is based on the mobile phone address book, supports text, voice, pictures, video and other communication modes, and can realize functions such as one-click dialing and short message group sending. At the same time, the software also supports multi-person voice or video calls, which can achieve efficient cooperation and communication.