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 in your phone settings.
  • Enable VoWiFi and WiFi-calling feature 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
Apple You'll need an iPhone device on iOS 11.3 and above
iPhone 6, iPhone 6 Plus, iPhone 6S and iPhone 6S Plus
iPhone 7, iPhone 7 Plus, iPhone 7s and iPhone 7S Plus
iPhone SE
iPhone 8 and iPhone 8 Plus
iPhone X, iPhone XS, iPhone XS Max and iPhone XR
iPhone 11, iPhone 11 Pro and iPhone 11 Pro Max
Samsung You'll need a Samsung device on Android 10
Samsung Galaxy S10+, Samsung Galaxy S10 and Samsung Galaxy S10e