What is the "HD" next to the cell phone signal sign? What's the point? After reading, I gained knowledge.

There is always an "HD" sign next to the signal sign on the top of the mobile phone. What does this mean? Let us show you more!

The meaning of "HD"

Literally, "HD" means HD, which can be HD resolution, HD voice, HD call, HD music and so on. Friends who like listening to music should be familiar with it. When downloading music, you are often asked to choose whether it is HD music. In addition, when watching videos, you can choose different resolutions, such as "HD" and "FHD".

The HD icon of mobile phone stands for volte, which is an IP data transmission technology. All business functions are carried on the 4G network, which is a high-definition voice solution based on the operator's 4G network. With VOLTE technology, we can make high-definition video calls and high-definition voice calls when making phone calls.

Why does "HD" appear?

This shows that your mobile phone supports "VoLTE" HD voice calling function. VoLTE is the abbreviation of Voice over LTE, which literally means 4G Voice (TD-LTE), and it is the 4G voice HD service of China Mobile. Secondly, your mobile phone card opens high-definition voice call service. What needs to be explained here is that this business is free!

However, it should be noted that although VoLTE is on the 4G network, the current call fee is still based on the call duration, not the data traffic. This is the "chicken thief" of China Mobile, and charging communication fees according to the call duration is obviously more touching than traffic fees.

What are the advantages and disadvantages of "HD"?

Advantages:

1, to achieve higher definition and more harmonious voice call effect, voice call quality will be clearer, and voice quality can be improved by 40%.

2. Call time will be shortened and call efficiency will be improved. In the past, it took 5-6 seconds to get through when making a phone call. With VOLTE, the time to connect the mobile phone is shortened to about 2 seconds.

3, the game is to enhance the network, even if you answer the phone, it will not affect the network speed, and you can continue the game.

4, not only improve the quality of calls, but also support video calls to make the picture clearer.

5, support online while talking, that is, you can make a phone call while playing games.

Disadvantages:

1, which may slow down the response speed of the mobile phone.

2. The power consumption of mobile phones has increased.

Some friends may think that traffic will be consumed during the call, but there is no need to worry about this, because the traffic consumed by this function is free outside the package.

How to turn HD on and off:

Enter the settings page, click Wireless and Network, select the mobile network function, and turn on or off VoLTE call with one button.

Finally, I still need to remind you to open it according to your own needs. Now you know what the high-definition function of mobile phone icons is!