Huawei HUAWEI Mate 20 Pro User Manual download pdf (Page 31)

l Dual V

oWiFi: Both of your Phone's SIM card slots support VoWiFi, which allows calls to be made

using Wi-Fi. You can use VoWiFi to make calls even in Airplane mode.

Some carriers may not support this feature.

Enable VoLTE to Enjoy HD Calls

l Some carriers may not support this featur

l Only dual-SIM phones support both SIM card slots enabling 4G, VoLTE, and VoWiFi.

Open

Settings, and go to W

ireless & networks > Mobile network. In the settings section for

SIM 1 or 2 (if supported by your carrier network), you can:

l Enable 4G: Turn on 4G. Due to carrier customization, there may not be a 4G switch on your

device. This indicates 4G is already enabled and does not need to be turned on manually.

l Enable VoLTE calling: Turn on VoLTE calls.

l Enable Wi-Fi calling: Turn on Wi-Fi calling.

After the setting is complete, select the contact you want to call and touch

to make a video call.

ou can also touch

on the screen during a voice call to switch to a video call.

Use V

oWi-Fi for a New Calling Experience

You can use VoWi-Fi to make voice and video calls in any location that has a Wi-Fi network, even

when there is no mobile network reception.

This feature must be supported by your carrier. Contact your carrier for more information,

including fees and char

ges.

Open

Dialer, go to > Settings > W

i-Fi calling, enable Wi-Fi calling. Touch Mode and

follow the onscreen instructions to set the preferred network.

Dialing

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Huawei HUAWEI Mate 20 Pro User Manual Page 31