|This feature is only available for T-Mobile customers.|
- On your iOS device, go to the Home screen and open Settings
- In the "Settings" tab, select the Phone field.
- On the Phone screen, select the Wi-Fi Calls field
- On the Wi-Fi Calls screen, makes sure the Allow Wi-Fi Calls option is turned On.
Once this feature is turned on, you have the ability to make a call using the a wi-fi network, as opposed to a cellular network.