Have you ever faced these frustrating moments?
Your call suddenly drops inside an elevator.
In the underground parking lot, no matter how hard you try, you just can’t make a call.
While traveling abroad, a single phone call feels more expensive than your flight ticket.
Traditional cellular networks struggle in these scenarios. The cost and complexity of deploying new base stations make it challenging for operators to deliver seamless coverage everywhere. So, how can operators guarantee crystal-clear voice experiences anytime, anywhere?
The answer is VoWiFi (Voice over Wi-Fi).
What is VoWiFi?
As its name suggests, VoWiFi enables users to make and receive calls directly over a Wi-Fi connection. On the surface, it may seem similar to WeChat or WhatsApp calls, but VoWiFi goes far beyond that—it integrates deeply with operators’ core networks to ensure superior quality and reliability.
Here’s what makes VoWiFi different:
Seamless Integration – VoWiFi is built into your phone’s native dialer. Just call as you normally would—no apps, no extra steps.
Carrier-Grade Quality – Calls travel through an encrypted IPSec tunnel to the operator’s IMS core network (the same system used for VoLTE), ensuring high-quality, secure, and reliable communication.
Unified Numbering – Whether on Wi-Fi or cellular, your number remains the same. Outgoing calls always display your mobile number for a consistent experience.
VoWiFi & VoLTE
VoWiFi and VoLTE are not competitors but partners, creating a complete all-IP voice solution:
VoLTE delivers HD voice over licensed 4G/5G cellular networks.
VoWiFi extends the same quality service to Wi-Fi, filling coverage gaps indoors or in hard-to-reach areas.
Think of them as two legs moving in sync: VoLTE provides outdoor mobility, while VoWiFi ensures indoor reliability—together, they keep you connected everywhere.
Seamless Handover Between Wi-Fi and 4G/5G
One of VoWiFi’s most impressive features is uninterrupted call continuity.
Powered by 3GPP standards such as Untrusted Non-3GPP Access, IPLOOK’s VoWiFi solution enables smooth transitions between Wi-Fi and cellular networks.
Example: You’re on a Wi-Fi call at home, then walk outside. Without interruption, your phone switches to 4G/5G. At most, you’ll notice a brief, millisecond-level pause. The same happens in reverse—step indoors, and your call shifts seamlessly to Wi-Fi.
IPLOOK's WLAN and LTE Convergence Solution
Behind this flawless experience is IPLOOK’s robust core network infrastructure, including ePDG, 3GPP AAA, and IMS systems. Built on international standards, IPLOOK ensures seamless interoperability between Wi-Fi and cellular networks, delivering the full promise of VoWiFi to every user.
Not a Replacement, but a Powerful Complement
VoWiFi isn’t meant to replace cellular voice—it’s designed to strengthen it. By transforming Wi-Fi into a personal signal booster, VoWiFi wipes out dead zones and delivers clear, reliable calls wherever you are.
With IPLOOK VoWiFi, communication knows no limits. The future of voice is seamless, borderless, and always within reach.
