Voice-over Wi-Fi (VoWiFi) - Market Share Analysis, Industry Trends & Statistics, Growth Forecasts (2026-2031)

The voice-over wi-Fi (VoWiFi) market size reached USD 10.05 billion in 2026 and is forecast to climb to USD 20.36 billion by 2031, advancing at a 15.17% CAGR during 2026-2031. This report is Segmented by Voice Client (Integrated VoWiFi Client, Separate VoWiFI Client, and More), Device Type (Smartphones, Tablets and Laptops, and More), Deployment Model (Network-Based IMS Core, Cloud-Hosted VoWiFi, and Hybrid Edge-Cloud), End-User (Residential Consumers, Small and Medium Enterprises, and More), and Geography. The Market Forecasts are Provided in Terms of Value (USD).

Global Voice-over Wi-Fi (VoWiFi) Market Trends and Insights

Rapid Expansion of Carrier-Grade Wi-Fi Roaming Agreements

Mobile network operators embed VoWiFi roaming in wholesale agreements to cut international termination fees and avoid PSTN interconnect charges. The GSMA 2025 IR.92 amendment standardized ePDG discovery, allowing seamless voice sessions across visited networks. Vodafone’s pan-European trial cut voice delivery costs by 40% and spurred similar deals among tier-1 carriers. Operators in spectrum-constrained Southeast Asia now view carrier-grade roaming as a coverage extension tool rather than a premium service. Passpoint R3 further simplified credential provisioning, reducing friction for end-users. These shifts collectively lift traffic off licensed spectrum and improve operator economics.

Rising Indoor Coverage Gaps in 5G NR Deployments

Mid-band and millimeter-wave signals lose up to 20 dB within concrete structures, forcing operators to keep LTE overlays for voice continuity. VoWiFi fills those gaps without new small cells, letting carriers retire legacy layers in urban cores. Verizon’s 2025 Manhattan C-band rollout redirected 60% of indoor calls to VoWiFi within 90 days, reducing planned small-cell density by 30%. The quick ROI encourages similar approaches across North America and Europe.

Persistent VoWiFi-to-VoLTE Handoff Quality Issues

Real-time IPsec tunnel renegotiation introduces 200-400 milliseconds of jitter, resulting in audible gaps that users perceive as dropped calls. Ericsson’s 2025 field data showed 18% mid-call drop rates during Wi-Fi-to-cellular transitions, far exceeding VoLTE benchmarks. Smaller operators with legacy cores struggle to fund the predictive authentication upgrades required to close the gap. Until quality stabilizes, some consumers disable VoWiFi, slowing overall traffic growth.

Other drivers and restraints analyzed in the detailed report include:

• Growing Penetration of VoWiFi-Capable Handsets
• Government Emergency-Service Mandates for Wi-Fi E911 Indoors
• Limited Monetization Models for MNOs

Segment Analysis

Integrated clients contributed 56.48% of 2025 revenue, powered by OS-level authentication that removes user friction. Browser-based options, though smaller, are growing at a 17.32% CAGR. The Voice-over Wi-Fi (VoWiFi) Market size attached to browser clients benefits from WebRTC maturity that makes installation-free voice attractive for bring-your-own-device environments. Enterprises value policy control and zero-trust separation that browsers deliver. Integrated clients still excel at predictive handoffs, reducing latency during coverage changes, yet browser innovations continue to narrow the performance gap.

A second driver is Passpoint R3, which automates credential provisioning for browser sessions. Cisco’s Webex Calling realized 30% lower development costs by avoiding native client builds, and this spending efficiency appeals to mid-market enterprises. Over the forecast, integrated clients will retain the largest share, but browser solutions will account for an expanding slice of the Voice-over Wi-Fi (VoWiFi) Market.

Smartphones held 80.36% revenue share in 2025, underlining their central role in voice communication. Other connected devices, although smaller, are expected to rise at a 15.49% CAGR. Industrial gateways, telematics units, and medical wearables all gain from chipset-level ePDG integration, which removes the need for separate cellular modules. The Voice-over Wi-Fi (VoWiFi) Market share for smartphones will gradually erode as these emerging endpoints adopt Wi-Fi calling due to cost and energy considerations.

Qualcomm’s sub-USD 5 VoWiFi-ready IoT chipset opened the door for voice-enabled sensors across manufacturing floors. Automotive makers embed VoWiFi in telematics control units to satisfy eCall regulations when cellular service is weak. Hospitals prefer VoWiFi for patient monitors because in-building cellular restrictions do not apply to Wi-Fi. Laptops and tablets play a secondary role, but larger batteries help them maintain continuous ePDG tunnels during long meetings.

Complete Report Scope:

• By Voice Client
  • Integrated VoWiFI Client
  • Separate VoWiFI Client
  • Browser-based VoWiFi Client
• By Device Type
  • Smartphones
  • Tablets and Laptops
  • Other Connected Device Types
• By Deployment Model
  • Network-Based (IMS Core)
  • Cloud-Hosted VoWiFi
  • Hybrid (Edge-Cloud)
• By End-User
  • Residential Consumers
  • Small and Medium Enterprises
  • Large Enterprises
  • Public-Safety and Government Agencies
• By Geography
  • North America
    • United States
    • Canada
    • Mexico
  • South America
    • Brazil
    • Argentina
    • Rest of South America
  • Europe
    • Germany
    • United Kingdom
    • France
    • Italy
    • Spain
    • Rest of Europe
  • Asia-Pacific
    • China
    • Japan
    • India
    • South Korea
    • ASEAN
    • Rest of Asia-Pacific
  • Middle East
    • Saudi Arabia
    • United Arab Emirates
    • Rest of Middle East
  • Africa
    • South Africa
    • Nigeria
    • Rest of Africa

Geography Analysis

Asia-Pacific generated 45.16% of VoWiFi revenue in 2025. China Mobile’s Wi-Fi 6E fabric and Reliance Jio’s fixed-wireless bundles underline the region’s spectrum scarcity workaround. KT covered subway tunnels with Wi-Fi calling, easing customer churn. Japan’s carriers completed interoperability testing, and India mandated VoWiFi support on new smartphones, enlarging handset readiness across rural zones.

Middle East will post the fastest 15.33% CAGR. Saudi Arabia’s regulator ordered nationwide VoWiFi by mid-2025. South Africa streamlined licensing to 90 days, letting smaller carriers deploy quickly. Nigeria saw adoption rise to 15% of mobile users in 2025 as enterprise Wi-Fi offset poor cellular penetration in Lagos. UAE operators now offer cross-emirate roaming, minimizing call drops during inter-city travel.

North America leans on VoWiFi to meet E911 mandates and shrink indoor densification budgets. T-Mobile integrated VoWiFi with its 5G standalone core, cutting urban call-drop rates by 35%. Verizon’s C-band plan saved USD 200 million in small-cell costs by steering indoor calls to Wi-Fi. Canada cleared 6 GHz VoWiFi with no individual licenses, accelerating regional uptake. Europe shows mixed progress because cross-border roaming rests on voluntary agreements, yet Germany already records 22% of voice minutes over Wi-Fi. South America remains city-centric, with Brazil mandating VoWiFi in new licenses while Argentina and Chile face infrastructure constraints.

List of Companies Covered in this Report:

• Cisco Systems, Inc.
• Nokia Corporation
• Telefonaktiebolaget LM Ericsson
• Huawei Technologies Co., Ltd.
• Oracle Corporation
• Samsung Electronics Co., Ltd.
• Apple Inc.
• Xiaomi Corporation
• ZTE Corporation
• Mitel Networks Corporation
• Ribbon Communications Operating Company, Inc.
• KT Corporation
• Aptilo Networks AB
• D-Link Corporation
• Aruba Networks, Inc.
• Broadcom Inc.
• Qualcomm Incorporated
• Boingo Wireless, Inc.
• CommScope Holding Company, Inc.
• Reliance Jio Infocomm Limited
• T-Mobile US, Inc.

Additional Benefits:

• The market estimate (ME) sheet in Excel format
• 3 months of analyst support