Problems with VoWiFi

  • Check if you are connected to a Wi-Fi network. Your connection should also be of sufficient quality.
  • Check if your personal firewall is not blocking Wi-Fi calls. Check settings: UDP ports 500 and 4500 must be open, and the MTU ("Maximum Transmission Unit") must be 1500 bytes for IPv4 and 1800 bytes for IPv6.
  • The IP address used must be Belgian in order to make calls via Wi-Fi.

Did you manage?

No, I need more help
Yes, thank you!