What is VoWiFi - and why are operators still investing in Wi-Fi calling?
RCR Wireness News, Tuesday, January 6th, 2026
VoWiFi uses IMS technology to provide a packet voice service delivered over IP via a Wi-Fi network
In sum - what to know:
Core element - VoWiFi is a key part of telco voice strategies, helping extend coverage, improving indoor performance, and supporting consistent voice services.
Accelerating demand - Demand for VoWiFi is accelerating, driven by the need for reliable, cost-effective voice in areas where cellular coverage is limited or inconsistent.
5G VoWiFi - 5G strengthens VoWiFi's role rather than replacing it, enabling tighter integration with cloud-native cores, VoLTE and VoNR interworking, and new use cases.
India's Bharat Sanchar Nigam Limited (BSNL) recently launched Wi-Fi calling or Voice over Wi-Fi (VoWiFi) services across India to support users in areas without or with limited mobile signals.
BSNL is not alone in launching such a service. VoWiFi is already a popular choice for many telcos around the world looking to bolster their connectivity offers, but what exactly is this technology, who benefits, and what is driving demand?