How does China Telecom activate VoLTE? What is it?

Hello, VoLTE is a high-definition calling function, which can be activated as follows:

1. Users can choose to go directly to the mobile phone business hall to activate the service, but they must ensure that the mobile phone they hold supports it. VoLTE high-definition calling function, and some models need to wait for the telecom VoLTE configuration file to be pushed.

2. If you want to activate the VoLTE function yourself, you need to send the "ktVoLTE" code to 10001 via text message, and then reply "Y" to activate it. Next, click to enter the settings page, select the "Dual SIM and Mobile Network" function to enter it, and then you can turn on VoLTE functional services.

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