How to turn off mobile phone HD

The operation method of closing the hd tag by vivo is as follows:

Operating tool: vivo y73s

Operating system: Funtouch OS 7. 127.

1, first open the phone and click Settings;

2. Enter the setting interface and click Wireless and Network;

3. Enter the wireless and network interface, and click the mobile network;

4. Enter the mobile network interface and turn off the VoLTE HD call;

5. After the 5.VoLTE HD call is turned off, the back button will turn gray;

6. Back to the mobile phone desktop, the HD icon in the upper corner of the page will be removed, that is, the HD function will be turned off.