TL;DR : BSNL has launched a free VoWiFi service that lets users make voice calls using Wi-Fi even without mobile signal. It's available in South and West India now, with a full rollout planned. Users need a compatible phone and a Wi-Fi connection.

Key Points:
Launch Details:
- BSNL launched VoWiFi (Voice over Wi-Fi) on October 2, 2025, during its 25th anniversary.
- The service allows users to make and receive voice calls over a Wi-Fi or broadband connection, even without mobile network coverage.
Availability and Rollout:
- Initially available in South and West zone circles, including states like Tamil Nadu, Kerala, Maharashtra, Andhra Pradesh, and Karnataka.
- BSNL plans to expand the service nationwide in phases.
Usage and Requirements:
- The service is free for all BSNL users.
- Users need a VoWiFi-compatible smartphone (most modern Android/iOS devices support it).
- Calls are made using the phone’s regular dialer, without any app or extra setup.
Network and Infrastructure:
- VoWiFi works alongside BSNL’s 4G network and is expected to support its upcoming 5G services.
- BSNL is also expanding its 4G network, having installed over 1 lakh towers, with plans to add 97,500 more.
Official Statement:
- The service was launched by Neeraj Mittal, Secretary of the Department of Telecommunications, who said it will “enhance connectivity in low-signal areas”.
Competitive Context:
- BSNL joins private operators like Jio, Airtel, and Vodafone-Idea, who already offer Wi-Fi calling.
- The service gives BSNL a competitive edge by offering it completely free, unlike some premium offerings by rivals.
User Benefits:
- Helps users in remote areas, basements, and buildings with poor mobile signal.
- No extra cost, no data usage, and improved call quality.