What is WiFi Calling?

WiFi Calling lets you make and receive phone calls over any WiFi network, using your regular phone number. It's perfect for places where cell signal is weak, like basements or buildings with thick walls.

What is WiFi Offload?

WiFi Offload automatically moves your phone's data traffic from cellular to WiFi when available. It saves carriers money on infrastructure and often gives you a faster, smoother experience.

What authentication methods do you support?

We support EAP-SIM, EAP-AKA, EAP-AKA', and EAP-TLS - these let your phone connect automatically using your SIM card. We also support Hotspot 2.0/Passpoint so your phone finds and joins trusted networks on its own.

How does seamless handoff work?

When you walk from WiFi to cellular coverage (or vice versa), your call stays connected without dropping. You won't even notice the switch happening - it's that smooth.

Is WiFi Calling secure?

Absolutely. All your calls and data travel through encrypted tunnels, so they're just as secure as (often more secure than) regular cell calls.

Can enterprises deploy WiFi Calling?

Yes! Businesses can enable WiFi calling on their office networks. IronWiFi provides the authentication backend that makes it all work securely with your carrier.

Works With Your Phone Number

Make Calls Anywhere - Even Without Cell Signal

Ever been in a basement, warehouse, or building where your phone shows no bars? With WiFi calling, you can make and receive calls over any WiFi network - using your regular phone number. It's automatic, secure, and sounds even better than regular calls.

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Trusted by over 1,000 organizations worldwide

70%

of mobile traffic now runs over WiFi worldwide

cheaper than building new cell towers

99.9%

of calls connect successfully (no dropped calls)

<50ms

switch time between WiFi and cellular - you won't even notice

Everything You Need for WiFi Calling

Built for carriers and big organizations who want it done right

Crystal-Clear Voice Calls

Make HD calls over WiFi that sound even better than regular phone calls. Great for buildings, basements, and anywhere cell signal struggles to reach.

Automatic Data Offload

When WiFi's available, your phone automatically uses it instead of eating through cellular data. Saves money, reduces congestion, and often runs faster too.

SIM-Based Login (No Passwords)

Your phone's SIM card handles everything. Users connect automatically to trusted WiFi networks - no passwords to remember or type in.

Passpoint - Just Works

No more hunting through WiFi network lists. Passpoint-enabled networks connect your phone automatically and securely - like magic.

Bank-Level Encryption

Every call and bit of data gets encrypted through secure tunnels. It's just as safe as - actually, often safer than - regular cell calls.

No Dropped Calls

Walk from WiFi to cellular and back again - your calls stay connected. You won't even notice the switch happening.

Where WiFi Calling Really Shines

Real-world places where this makes a huge difference

Office Buildings

Thick walls and metal structures kill cell signals. With WiFi calling, your team stays connected using their regular work numbers - no dead zones.

Stadiums & Events

When 50,000 people pull out their phones at once, cell towers can't keep up. WiFi offload handles the crowd without breaking a sweat.

Hotels

Guests can call home without roaming charges. They use their own phone number over hotel WiFi - no apps or weird workarounds needed.

Rural Communities

No cell tower nearby? No problem. As long as there's WiFi, people can make calls. Great for remote areas that carriers don't reach.

Trains & Subways

Tunnels and underground stations are notorious dead zones. WiFi calling keeps passengers connected the whole journey.

Hospitals & Clinics

Some medical equipment doesn't play nice with cell signals. WiFi calling lets staff and visitors stay in touch without any interference.

The Tech That Makes It Work

How we keep connections secure and automatic

EAP-SIM

Uses your SIM card to log you in automatically. Works great with older devices and simpler setups.

EAP-AKA

The go-to for 4G/LTE networks. Your phone and the network verify each other - double the security.

EAP-AKA'

The 5G-ready version with even stronger encryption. Required for modern WiFi calling setups.

Hotspot 2.0

Your phone finds and connects to trusted networks automatically. No more scrolling through WiFi lists.

Why Carriers and Businesses Love This

Save money, make customers happy, and extend your reach

Skip the Cell Tower Bills

Why build expensive new towers when you can use WiFi that's already there?

Reach the Unreachable

Cover those tricky spots - deep inside buildings, underground, wherever cell signals fear to go.

It Just Works

No passwords, no setup, no support calls. Users connect automatically with their SIM.

See What's Happening

Track usage, monitor call quality, and spot issues before users complain.

Better Call Quality

HD voice that sounds clearer than cell calls. Your users will actually notice the difference.

Rock-Solid Security

Everything's encrypted end-to-end. Your calls and data are as secure as they get.

How It All Works

Four steps, all happening in the blink of an eye

Find the Network

Your phone spots a compatible WiFi network nearby

Log In Automatically

Your SIM card proves who you are - no password needed

Create Secure Tunnel

An encrypted connection links your phone to your carrier

You're Connected

Make calls, send texts, use data - all over WiFi

Ready to Get Started?

We'll help you set up WiFi calling that just works. EAP-SIM, EAP-AKA, Hotspot 2.0 - it's all built in and ready to go.

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