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Questions about VoWi-Fi

Voice over Wi-Fi (= VoWiFi), aka Wi-Fi Calling, allows you to continue making calls or exchanging text messages anywhere you have Wi-Fi, even when there’s no mobile signal. VoWiFi provides the ability to call or message from almost anywhere a Wi-Fi connection is available in Belgium.

You need a VoWiFi compatible smartphone with the latest software supporting VoLTE & VoWiFi. Once you have one, it’s simple to use: no separate app, no new contact list and no log-in are required.

  • You must activate Wi-Fi Calling in the settings of your mobile phone
  • Have a Proximus mobile phone subscription and activate the Wi-Fi Calling option
  • Be located under Wi-Fi coverage of a wireless access point in Belgium, regardless of the provider
  • At this moment, you can make calls over VoWiFi with: Samsung Galaxy S10 ; Samsung Galaxy S10+ ; Samsung Galaxy S10e

VoLTE (Voice over LTE) is an advanced technology that delivers high-quality life-like sound across the 4G network. With Proximus VoLTE you experience ultra-clear voice quality and reduced background noise everywhere in Belgium. Conversations sound more natural, almost as if the person at the other end of the phone call is right next to you. Moreover, when combining VoWiFi with VoLTE, your phone will automatically transfer from a Wi-Fi signal to a mobile signal (4G), so your call won’t cut off if you lose your Wi-Fi signal. This is not possible when you’re calling over Wi-Fi with a separate app such as Skype, WhatsApp, ..

There won’t be an additional charge for using Proximus VoWiFi. Once activated, VoWiFi calls are billed like mobile voice calls on the Proximus network, depending on your plan’s allowance of minutes. VoWiFi calls to foreign countries are charged the same as calls to foreign countries from the mobile network. Sending text messages via Wi-Fi is counted and billed like text messages on mobile networks.

VoWiFi requires a good and reliable Wi-Fi connection for the best possible call quality. With VoWiFi from Proximus, you will benefit from the same high-quality life-like sound as VoLTE. If you have no good Wi-Fi coverage at home, you can improve it using e.g. a Wi-Fi-Booster. If necessary, you must move to a location closer to a Wi-Fi Access Point with better signal.

You can currently only use Wi-Fi Calling in Belgium. Abroad, you can make calls over the mobile network as usual.

With the Wi-Fi Calling option, you get:

  • continuity of your calls between the Wi-Fi network and the 4G network when you're on the move. For example, when you enter a building, your mobile phone call becomes a Wi-Fi call without you noticing,
  • optimal ease of use: you continue to make your calls and exchange your SMS messages as usual
  • improved reach, inside a building: all you need is access to a Wi-Fi network, whatever it is

If you are connected to WIFI you can send and receive SMS just like you are connected to the mobile network.

Once the option is activated and your mobile is set up correctly, your mobile will choose to make a Wi-Fi call if your mobile coverage is weak or not existing. In other words, cellular mobile calls will by default be preferred to Wi-Fi calls. Your call will return to the mobile network if the Wi-Fi network signal becomes too weak or is cut off.

When you make a Wi-Fi call with a Samsung S10e, S10 or S10+, a small logo appears in the upper left corner of your smartphone (to the left of the Wi-Fi network sign), representing a small telephone handset

You cannot make an emergency call with VoWiFi. You are obliged to send your location information when you call an emergency number and that is not possible via VoWiFi. When calling 100 or 112, you are automatically switched to the mobile 2G or 3G network. Does our mobile network temporarily have no coverage? No worries. You will be automatically switched to the network of another provider.

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