How to turn on high-definition voice of mobile phone

If you use vivo mobile phone, VoLTE realizes the unified bearing of data service, voice call, video call and SMS/MMS service based on 4G network and IP transmission technology. Under the VoLTE network, the voice call quality is better and clearer, and the call waiting time is shorter (the connection time is as short as 3 seconds). You can surf the Internet while talking outside, and the data network will not be disconnected. The daily use of the VoLTE function will make the communication experience better.

How to turn on VoLTE:

At present, the system turns on the VoLTE HD calling function by default, and there is no setting option. Just contact the operator to start the VoLTE service and use it under the coverage of VoLTE network.

The contact numbers of the four major domestic operators are: 10099 (China Radio and Television), 10086 (China Mobile),10 (China Unicom) and 10000 (China Telecom), so you can call them in time.

Funtouch OS 9 and above, incoming and outgoing call settings-mobile network/dual card and mobile network-mobile/Unicom/telecom-VoLTE HD voice call, if this option is not available, it will be turned on by default.

Funtouch OS 9 has the following system startup methods:

Path 1: Go to Settings-More Settings-About Mobile Phone Status-SIM Card, just open "VoLTE Call";

Path 2: Enter Settings-Telephone and turn on "VoLTE Call".

Note: If there is no VoLTE switch in the settings, you can enter vivo official website-My-Online Customer Service-Sliding Bottom-Online Customer Service-and enter the manual customer service for consultation and understanding.