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How does iphone turn on volte function?

1. Find the "Settings" icon on the desktop and click to enter the settings interface.

2. After entering the system setup, click the "Cellular Mobile Network" button in Item 4 to enter the setup interface.

3. After entering the cellular mobile network setup, click the second option "Enable 4G" to enter the setup interface.

4. After entering the setup page, click the second option "Voice and Data" to enable the VoLTE function.

5. When enabled, you can use the VoLTE calling function when making a call.