What does the "HD" letter on the cell phone signal bar mean? It turns out it has such a big effect! Learn more after reading this

We use mobile phones every day, but many people may not notice the two letters HD that suddenly appear on the signal bar at the top of the phone. Or, even if they notice it, many don’t know what it means or what it does? Will it cost extra? Let’s collect it and learn about it together!

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First of all, let us understand what HD signal means?

There are two English letters "HD" on the mobile phone, which stands for Volte high-definition voice call. At present, all major operators have launched this function, such as China Mobile and China Telecom, etc. It is also called 4G plus network. This function is based on the 4G network. In the 4G network state, it can not only increase the speed but also improve the quality of mobile phone audio and video calls.

What does turning on HD do?

It means that we can also use the mobile network when making and receiving calls, and the call volume is clearer. HD is a high-definition standard for our mobile phone voice quality. With it, we can enjoy higher quality voice quality when using our mobile phones.

For gamers, when we are playing large games, if a call comes in, Volte can ensure that your game network will not be interrupted and can run smoothly; in the past, if you were not connected to WiFi, your phone could not use data to access the Internet when making a call. The most obvious solution is to solve the problem of not being able to access the Internet when answering a call while using data traffic.

Is there an additional charge for turning on HD?

When making a voice call, this feature does not use any phone charges, as long as you are connected to the network. If HD is always on, it will not cause any impact on the phone, but if it is turned off, it will easily lead to poor call quality. However, if HD is always on, it will increase the energy consumption of the phone and slow down the entire phone.

If you want to close it,

1. First turn on your phone, then find and open the "Settings" option on the phone desktop.

2. Next, select "SIM card and mobile network" on the settings page.

3. Next, select Mobile Network on the page and click to enter.

4. Next, select "Volte HD Voice Call" on the page and turn off the options that follow.