How to activate non-cellular VoWiFi to make voice calls over Wi-Fi

Galaxy S23 Ultra with Wi-Fi Calls resource configuration screen
Wi-Fi Calling is available on smartphones with Android and iOS (Image: Lucas Braga/Tecnoblog)

Activating Wi-Fi Calling (VoWiFi) on cellular is a necessary step to make voice calls using a Wi-Fi network. This configuration is advantageous for seeking better connection quality when the cellular network signal is broken.

You can find the resource in the network configurations of Android or iOS, since your telephone operator offers the service for the contracted plan.

To continue, or Technoblog Shows the step to activate voice calls over Wi-Fi on Motorola, Samsung, Xiaomi or iPhone smartphones.

How to activate calls over non-Motorola cellular Wi-Fi

1. Enter the Android network settings

Open like this Configurations your smartphone (gear icon) and then enter the option Network and internet.

How to activate Wi-Fi calls on Motorola cell phones

2. Go to your mobile network settings

In the Network and Internet section, touch Mobile network. If you have more than a chip, select the desired line. Em immediately, touch em Advanced no end of fabric.

How to activate Wi-Fi calls on Motorola cell phones

3. Active calls over non-Motorola cellular Wi-Fi

In the section Chamadasbetween em Wi-Fi Chat. Then, activate the selector to connect or Wi-Fi Calling.

How to activate Wi-Fi calls on Motorola cell phones

If Wi-Fi Calling is available to your operator and service plan, an indicator icon such as the phone symbol and Wi-Fi will be displayed in the top status bar.

How to activate calls over non-Samsung cellular Wi-Fi

1. Enter the settings of the Galaxy cell phone

Open like this Configurations your Samsung Galaxy (gear icon), and then enter them Connections.

How to activate Wi-Fi calls on Samsung cell phones

2. Access the Wi-Fi calling settings and active Samsung non-cellular resource

Enter the option Wi-Fi Chats ou WIFI Voice Calls. Next, activate the key for each SIM chip individually.

How to activate Wi-Fi calls on Samsung cell phones

If the resource is available to your mobile operator and cell phone plan, as soon as you can use Wi-Fi if the indicator icon appears WIFI voice ou VoWiFi a status bar.

How to activate calls over non-cellular Wi-Fi Xiaomi

1. Enter mobile network configurations

Open like this Configurations of your Xiaomi smartphone (gear icon), and then enter the option SIM cards and mobile networks.

How to activate Wi-Fi calls on Xiaomi cell phones

2. Escolha or unwanted chip

The Wi-Fi Calling setting is done individually for each line. Select the desired line.

How to activate Wi-Fi calls on Xiaomi cell phones

3. Active as Xiaomi non-cellular Wi-Fi calls

In the section Wi-Fi Chatsactivate the option Make calls using Wi-Fi Not my Xiaomi smartphone.

How to activate Wi-Fi calls on Xiaomi cell phones

If VoWiFi is available to your mobile operator and cell phone plan, voice connections can be made to the Wi-Fi network if the indicator icon appears VoWiFi a status bar.

Extra step: unlock Wi-Fi calls on Xiaomi cell phones

If the Wi-Fi Calling option is not available on your Xiaomi smartphone, you can try to unlock the Wi-Fi Calling function using a secret code.

To do this, open the dialer (as you would find for someone) and enter the code *#*#869434#*#*. A message will be displayed “VoWiFi carrier check was enabled“ou”VoWiFi carrier check was disabled“.

From now on, return to the tutorial and try to activate the Wi-Fi calls during the phone settings. It is worth noting that the code may not work on all Xiaomi devices.

How to activate Wi-Fi calls on Xiaomi cell phones

How to activate calls over Wi-Fi on iPhone

1. Access the iOS Settings and open the Cellular menu

between em Settings (gear icon), after you touch it Cell phone. If you have more than one mobile line on your iPhone (chip + eSIM or two eSIMs), select the desired SIM.

How to activate Wi-Fi calls on iPhone

2. Enter the Voice and Data and Wi-Fi Links option

Select or menu Wi-Fi Links. Then, activate the option Wi-Fi Connections Neste iPhone.

If the Wi-Fi Calling function is available to your operator and service plan, voice calls can be made over the Wi-Fi network.

Not Brazil, only Claro e Vivo offers support for Wi-Fi Calling on iPhone. You can grant the service in this case or the name of the operator indicate LIVE Wi-Fi ou Clear WiFi.

How do you know if Wi-Fi Calling is active or not cellular?

To verify that Wi-Fi Calling is working, check the status bar of your smartphone that displays the VoWiFi technology icon. It is not necessary to make a link for the indication to be displayed.

Not Androidor icon can appear in different ways:

  • WIFI voice (on Samsung devices with Vivo chip)
  • VoWiFi (on Xiaomi devices or Samsung cell phones with Claro chip)
  • Wi-Fi icon next to a phone (Motorola or Samsung cell phones using Americanet)

Not iPhone, it is possible to verify the name of the operator on the lock screen or on the control center. When Wi-Fi Calling is active, “Wi-Fi Live” or “WiFi Clear” is displayed.

Wi-Fi Calling symbols on Android and iOS smartphones
Wi-Fi Calling symbols on smartphones with Android and iOS (Image: Reprodução/Tecnoblog)

Depending on the operator and device, the cellular network may be prioritized in relation to Wi-Fi Calling. In these cases, the icon will only be displayed if it is outside the coverage area or when the cell phone is in airplane mode, but connected to a wireless network.

Why can't I use non-cellular VoWiFi?

The impediment to the use of VoWiFi may be related to the availability of the service with the telephone operator or to the configuration of the smartphone system, among other factors.

First of all, it is necessary to verify that you can use Wi-Fi Calling. Not all operators support technology, or allow all customers to access the service:

  • TO Alive offers Wi-Fi voice service for all customers.
  • TO Clear It offers VoWiFi technology, but only for pure post-paid users (not valid control, pre-paid or Claro Flex).
  • Virtual operators Americanet (like Veek, for example) supports Wi-Fi Calling, but only on Android devices.
  • TO TIM We do not have Wi-Fi connection technology for any client.
  • Most Brazilian virtual operators do not offer VoWiFi, including Correios Celular, Surf Telecom, Uber Chip, Inter Cel etc.

If you are a customer who chooses VoWiFi and a compatible device, certify that you activate the device configurations.

If it still does not work, do a test on a different network. The stability of the Wi-Fi connection range can also influence the performance of VoWiFi. In case of oscillations, you may try to improve the quality of the Wi-Fi signal by repositioning the rotator and removing obstacles, for example.

If this does not work, contact your operator for support. In some cases it is necessary that VoWiFi and VoLTE be activated manually by an attendant.

Can I use VoWiFi to make calls without a SIM chip?

No. The operation of Wi-Fi calling depends on the authentication of the device with a valid eSIM or SIM card. Even though you do not have a cell phone signal, a chip is necessary to use VoWiFi technology.

However, it is possible to make calls over Wi-Fi via VoIP services such as WhatsApp, Skype, FaceTime, Instagram, among others. In this case, the connections are performed independently of the operator, but the other interlocutor must use the same application.

How to activate non-cellular VoWiFi to make voice calls over Wi-Fi

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