Where is the OPPO HD call feature turned on

time：2025-05-05 16:01:30 Smart Hardware

Reference content 1:

1. First of all, the first step is to open the phone, find the function icon of setting in the application interface of the phone, and click to enter it after finding it.

2. Click to enter this setting interface, we find the SIM card and traffic management option in the interface, and click to enter it after finding this option.

3. After entering this interface next, we find our own traffic card options in the interface, as shown in the figure below, China Unicom, and then click to enter it.

Reference content 2:

1. When turning on the VoLTE call function switch in the mobile phone, you first need to go to the mobile business hall to activate the VoLTE call service, that is, to open the 4G HD language call service.

2. Or dial 10086 customer service number to 0 to connect to the real language service; You can also use the mobile phone business hall client...

Reference content 3:

1. Click the Settings button on the desktop to enter.

2. After the page jumps, enter the settings page, click to open SIM card and traffic management to enter.

Reference content 4:

1. Tap Wireless & Network Tap Wireless & Network on your phone's settings page.

2. Click Mobile Network Click Mobile Network at the bottom of the page.

3. Turn on the HD call switch Click to turn on the VoLTE HD call switch.

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