BSNL has launched its Voice over WiFi (VoWiFi) service nationwide, enabling customers to make and receive calls and messages over a Wi-Fi network. This service aims to improve connectivity in areas with weak mobile signals, including rural and remote locations, provided a stable Wi-Fi connection is available. VoWiFi is offered free of charge and is supported on most modern smartphones after enabling the setting. The rollout is part of BSNL's network modernization efforts to enhance nationwide connectivity.