Ho does one make a wifi call on the S21Ultra 5g

[S21Ultra5]

How does one make a wifi call on the S21Ultra 5G, settings are correct, wifi calling is enabled but the wifi calling icon does not appear  on top the the screen

[M2NGWA]

You need to be on Wi-Fi and it may call through WiFi depending on the mood of your phone.

[S21Ultra5]

Please explain what do you mean by the "mood of my phone". I am always connected on wifi

[M2NGWA]

When your phone is connected to WiFi it should show a WiFi calling symbol which means that calls through WiFi, but it changes it occasionally like it did in this case but reverts back to the sim connection which means even when making calls it will use the sim card. So the phone decides when it wants to use the Wi-Fi calling on its own parameters hence the mood of the phone.

[S21Ultra5]

Thank you

[Tsogo_sam05]

Hi, S21Ultra5 No signal, no problem. You’re covered with Wi-Fi Calling from participating carriers. With this feature, you can make calls and send messages over a Wi-Fi connection when cell service isn't available. Now you’ll never be denied by a weak signal again.

Note: The Wi-Fi Calling feature may not be available on all carriers or devices.

1. Navigate to and open the Phone app. 

2. Tap More options (the three vertical dots), and then tap Settings.

3. Tap Wi-Fi Calling, and then tap the switch to turn the feature on. 

4. On some phones, you can also enable Wi-Fi Calling from the Quick settings panel.

5. Swipe down from the top of the screen using two fingers, and then tap the Wi-Fi Calling icon to turn it on.

You can update your Emergency information at a later time by navigating to Wi-Fi Calling, and then tapping Emergency Location Information or Update current Emergency address.

Note: On AT&T phones, VoLTE must be turned on to activate Wi-Fi CallingWi-Fi calls will now be enabled. To turn Wi-Fi Calling off, just tap the switch again.

[S21Ultra5]

Thank you How to turn on VoltE, and what is AT&T phones?

[M2NGWA]

AT&T is a network provider like Vodacom in the USA and phones that are using that network.