VoWiFi is a technology that enables users to make/receive calls over Wi-Fi without the need to connect to a mobile network. Calls are made using the standard dialer, without the use of an additional application. A call on VoLTE can switch to VoWiFi when a WIFi connectivity is available, without interrupting the call. Likewise, mobile phones will switch to VoLTE (4G Voice) when Wi-Fi signals are weak, without interrupting the call.

Dialog Mobile customers who have capable devices can enjoy VoWiFi service by connecting to any Wi-Fi connection in Sri Lanka. The service will not be offered to customers who are connected to a Wi-Fi network outside the country.


To activate, follow the below mentioned steps:

  • Ensure you have a VoWiFi supported device
  • Make sure the VoWiFi calling function is set to ‘Active’ on the handset settings
  • Request to activate the service by sending a SMS to 678 with “ACT 4GV” (This will activate both VoLTE & VoWiFi)

Frequently asked questions

What is the eligibility criteria to use VoWiFi?

What are the device models that are compatible with VoWiFi on the Dialog network?

What are the benefits of VoWiFi?

What is the voice quality when using VoWiFi?

How are calls charged?