After rolling out in Delhi-NCR earlier this month, Bharti Airtel has expanded its voice over Wi-Fi (VoWiFI) service to Mumbai, Kolkata, Andhra Pradesh, Karnataka, and Tamil Nadu.

Earlier this month Airtel had launched this service in the Delhi circle.

Airtel Wi-Fi Calling is designed to enhance voice calling experience for Airtel smartphone customers, especially when they are indoors.

With Airtel Wi-Fi Calling, customers with Wi-Fi at home or office will get excellent signal quality indoors. There will be no extra charge for calls made over Airtel Wi-Fi Calling and the application consumes minimal data.

The smartphones that are currently compatible with the WiFi calling feature include iPhone 6s series and above, Redmi K20, K20 Pro, POCO F1, Samsung J6, A10s, On6, M30s and all OnePlus 7 models.

Moreover, the service is currently compatible with Airtel Xstream Fiber home broadband and will soon be compatible with all broadband services and Wi-Fi hotspots.

Airtel has said that it is closely working with all leading smartphone brands to ensure their compatibility with Airtel WiFi Calling.