What is VoWiFi — and why are operators still investing in Wi‑Fi calling?
Voice over Wi‑Fi (VoWiFi) routes mobile voice calls over a Wi‑Fi network instead of the cellular radio network, using the same IMS (IP Multimedia Subsystem) core that powers VoLTE. For operators, it is a way to plug coverage gaps, especially indoors and in dense buildings where radio signals struggle, while keeping voice quality and services consistent with normal mobile calling.
Demand for VoWiFi is growing as more users rely on indoor connectivity and as operators push to rationalize legacy voice networks. By shifting more calls onto IP over Wi‑Fi, carriers can extend usable coverage without building as many new cell sites, improve user experience inside homes and offices, and keep a unified voice platform across Wi‑Fi and cellular access. This is why operators continue to invest in Wi‑Fi calling as part of their broader voice and network strategies.
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