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Huawei P40 Pro
Android 10.0
1. Find "Mobile data"
Press Settings.
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Press Mobile network.
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Press Mobile data.
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2. Turn VoLTE on or off
Press the indicator next to "VoLTE calls" to turn the function on or off.
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3. Return to the home screen
Slide your finger upwards starting from the bottom of the screen to return to the home screen.
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