How to use mobile data during a call: 1. On the mobile phone desktop, click "Settings"; 2. On the "Settings" interface, click "Mobile Network" - "Mobile Data"; 3. In " On the "Mobile Data" interface, find and turn on the "VoLTE HD Call" option.
The operating environment of this tutorial: Magic UI 4.0.0 system, HONOR V30 mobile phone.
Some mobile phones support the function of surfing the Internet during calls: using a mobile 4G card and activating VoLTE (high-definition voice) service, support surfing the Internet during calls when using 4G.
How to activate VoLTE (high-definition voice) service:
1. On the mobile phone desktop, click "Settings".
2. In the "Settings" interface, click "Mobile Network" - "Mobile Data"
3. In the "Mobile Data" interface, find and turn on the "VoLTE HD Call" option.
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