Setting path: Go to phone settings -- SIM card and traffic management -- select a SIM card -- VoLTE HD call off.HD stands for the Volte function to open the Volte function Introduction: VoLTE is a voice service based on IMS. VoLTE is Voice over LTE, which is an IP data transmission technology. It does not require 2G/3G networks. All services are carried on 4G networks, enabling unified operation of data and voice services under the same network.In other words, 4G networks not only provide high-speed data services, but also provide high-quality audio and video calls, which requires VoLTE technology.
1. HD means high-definition call. 2. You can turn on (off) the VOLTE voice call function in Settings - Phone HD refers to the voice call scheme launched by operators that can use VOLTE to make calls when 4G+is enabled.In Settings - Phone - VOLTE voice call function, turn off volte.
This hd indicates that you are using a mobile 4G network. If you want to remove this hd, you need to set up the network.In this setting, if 4G is not used, its hd will disappear, but its network setting will become a 3G network. The network is not so fast.If you have to use mobile network, there is no way to solve this problem.
1. HD is displayed in the status bar of the mobile phone, indicating that the high-definition voice call function, namely VoLTE, has been enabled.VoLTE is a voice service, which can make the waiting time for phone connection shorter, and the call quality higher and more natural; 2. It enables you to use the Internet to access the Internet while making a call, while returning to WeChat/viewing maps.The VoLTE function is free. VoLTE high-definition voice calls and ordinary voice calls have the same price, that is, there is no additional charge. characteristic: 1. The most direct feeling that VoLTE technology brings to 4G users is that the connection waiting time is shorter, and the voice and video call effect is higher quality and more natural.VoLTE is fundamentally different from 2G and 3G voice calls.VoLTE is an end-to-end voice solution based on all IP over 4G networks; 2. Compared with 2G and 3G voice calls, VoLTE can improve voice quality by about 40% because it uses high-resolution encoding and decoding technology.VoLTE brings users a lower access delay (waiting time after dialing), which is 50% lower than that of 3G, about 2 seconds, while in the 2G era, it is 6-7 seconds.In addition, in 2G and 3G, drop outs occur occasionally, but the drop rate of VoLTE is close to zero.
This HD logo represents that the current mobile phone signal supports high-definition voice calls. It is equivalent to a logo that network communication is enabled. It represents the current signal strength, so it cannot be removed.
