How does Shanghai Telecom open VoLTE?

VoLTE is the function of high-definition calling, which is turned on as follows:

1. Users can choose to go directly to the mobile phone business hall to handle business, but to ensure that their mobile phones support VoLTE HD calling function, some models need to wait for the push of telecom VoLTE configuration files.

2. To enable the VoLTE function by yourself, you need to send the code "ktVoLTE" to 1000 1 by SMS, and then reply "y" to enable it. Next, click to enter the settings page, and select the function of "Dual Card and Mobile Network" to enter, and you can start the functional services of VoLTE.