How to make calls via 4G?

Thanks to the new VoLTE (Voice over LTE) technology you can make calls via 4G within Belgium. Up to now, you could only make calls over the 2G or 3G network.

When you make calls via 4G, you don't use any data, only call minutes.

To use VoLTE, you need a compatible phone equipped with the latest software:

  1. A compatible phone:
    Currently you can only make calls via 4G with the Samsung Galaxy S7, S7 Edge, S6, S6 Edge, J5, A5 or A3. Or an iPhone 7 Plus, 7, 6s Plus, 6s, 6 Plus and 6. Other phones will follow shortly.
  2. The correct settings:


    • The latest software. Go to Settings > Device info > Manually download updates to download the latest software version on your phone.
    • VoLTE is activated by default on your phone. To switch off VoLTE, go to Settings > Mobile networks and switch off the VoLTE call button. You can activate VoLTE again later in the same way.


    • Go to Settings > Mobile > Activate 4G for Voice & Data or Settings > Cellular data > Options > Activate Voice & Data, depending on your version.
    • VoLTE is gradually being activated for all numbers. You will receive a text message when VoLTE is activated for your number.

Do you wish to use a VPN application? In some cases, you need to temporarily switch off VoLTE.

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