vivo Y77 What does hd in the upper left corner mean

Recently, many children plan to change their mobile phones, and they will pay close attention to many details. For example, many children who bought vivo Y77 said that there was a "HD" mark in the upper left corner. What does that mean? Because many children care about this problem very much, then hurry up and have a look at the relevant introduction with the small editor.

What does the hd in the upper left corner of vivo Y77 mean?

It means VoLTE HD call

VoLTE, namely Voice over LTE, is a voice service based on 4G network, also called high-definition telephone service, including high-definition voice telephone and high-definition video telephone. When making a call, it does not need to switch to 2G/3G network mode. Under 4G network, it not only provides high-speed data services, but also provides high-quality audio and video calls.

You can close it

How to turn off HD calls

1. Open phone settings

2. Click Wireless and Network

3. Click Mobile Network

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

5. Back to the mobile desktop, the HD icon on the top corner of the page is removed

The hd in the upper left corner of vivo Y77 refers to the VoLTE high-definition call. If this flag is used, you can close it. If you don't need it, you can follow the steps above. The closing steps are also very simple. I hope this article can help you solve the problem~