Have you ever imagined that you can make free calls using the wifi network? Yes, you read it right. VoWiFi (Voice Over WiFi) is a feature that allows you to make calls using a WiFi network instead of a conventional mobile network. VoWiFi feature is currently available in Bharti Airtel and Jio networks. This feature comes handy to the people in the low network coverage locations.
Most of the higher-end and mid-range smartphones have support for this feature.
(If Wi-Fi calling or similar option was not displayed in the Sim card settings page even after following the above steps, your smartphone might not support the VoWi-Fi feature as of now)
Bharti Airtel and Jio announced that all the calls made using VoWiFi are free of charges.
Note:
Calls made are generally connected through mobile networks if you are living in the good network coverage places. Calls will be connected through the Wi-Fi network only in places with low or no mobile network coverage.