Enjoy seamless connectivity and crystal clear conversations with VoWiFi.


Voice over WiFi - or VoWiFi - lets you make HD quality calls on WiFi connections, just like you would on your mobile cellular network with maximum clarity.

Automatic switching without interruptions.


Even if you move out of range of your WiFi network while on a VoWiFi call, the connection switches seamlessly between a WiFi connection and your mobile network. Plus, there is no additional subscription charge or app download required.

What you need to experience VoWiFi.


  • A StarHub 4G mobile plan activated with HD Voice+.
  • Enable 4G for both voice and data and VoWiFi in your phone settings.
  • You are located in a WiFi enabled area when making a call.
  • The mobile call is made using a compatible handset*.


*Compatible handsets include: iPhone 6, iPhone 6 Plus, iPhone 6S, iPhone 6S Plus, iPhone 7, iPhone 7 Plus, iPhone SE, iPhone 8, iPhone 8 Plus, iPhone X on iOS 11.3 and above.