How to cancel HD in mobile phone state?

Turning off VoLTE can cancel HD. The specific operation steps are as follows:

1. Turn on the mobile phone, and then we click the settings of the mobile phone desktop to pop up the interface, and we click wireless and network;

2. The interface pops up, and we click on the mobile network;

3. In the pop-up interface, just slide the VoLTE switch to the left.

Extended data:

HD (VoLTE) is a voice service, which can make the waiting time of 4G users shorter, the call quality higher and more natural. What's even more surprising is that turning on this function allows you to surf the Internet using the 4G network while talking, and return to WeChat/view the map while making a phone call, which is convenient and free.