What does HD call function mean?

The high-definition calling function is a free upgrade of ordinary phone services. Like the functions of making calls and sending text messages, it is a free basic service function that mobile numbers automatically enjoy without any function fees; high-definition voice allows users to It sounds clearer and dials faster when making phone calls. If you often use your mobile phone to surf the Internet, you can use HD voice to make calls and surf the Internet at the same time without interfering with each other.

#The operating environment of this tutorial: HarmonyOS 3 system, Huawei P30 mobile phone.

What does the HD call function mean?

VoLTE HD calling is a free upgrade to ordinary phone services.

The high-definition voice (VoLTE) service is the same as the function of making calls and sending text messages. It is a free basic service function that mobile numbers automatically enjoy without any function fees.

HD voice can make your phone calls sound clearer and make calls faster. If you often use your mobile phone to surf the Internet, you can use HD voice to make calls and surf the Internet at the same time without interfering with each other.

The [VoLTE call] function of the mobile phone refers to 4G high-definition voice calls. Turning this function on can improve the call quality of the mobile phone. The method to turn on this function is (taking the OPPO R11 mobile phone as an example, the method of turning on other phones that support VoLte function is roughly the same):

1. First, click the [Settings] icon on the phone desktop to enter the phone's settings page.

#2. After entering the settings page of the mobile phone, click on the front setting item [Dual SIM and Mobile Network] in the settings page, and click to enter the detailed settings page.

#3. After entering [Dual SIM and Mobile Network], select the mobile phone operator that needs to enable the VoLte high-definition calling function.

#4. After entering the new page, find the [VoLTE call] item on the page and click the switch on the right to turn on the VoLTE function of the phone.

#5. Return to the mobile phone desktop and observe the top bar of the phone. You can find that the VoLTE logo has been added, indicating that the VoLTE function is successfully turned on.

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