Should You Turn On Wi-Fi Calling? Benefits, Risks and What to Know
A weak mobile signal can make phone calls frustrating, especially indoors or in areas with patchy coverage. Wi-Fi calling offers another option: a compatible phone can make and receive regular calls over a Wi-Fi connection. It can be very useful at home or work when the router provides a more reliable connection than the phone gets from the cellular network. But it is not a solution to every connectivity problem.
What Is Wi-Fi Calling?
Wi-Fi calling, also known as Voice over Wi-Fi (VoWiFi), routes supported calls and, on some networks, texts through Wi-Fi instead of relying on the cellular signal for that connection. It typically uses your existing mobile number and normal phone dialled, so the person you call does not need a special app or Wi-Fi calling enabled.
Availability in reality depends on your operator, phone, software, and location. It is different from calling through WhatsApp or FaceTime, which use separate apps.
The Benefits of Wi-Fi Calling
1. Better Coverage Indoors
Wi-Fi calling can help when mobile reception is weak at home, at work or inside buildings where walls and construction materials block signals. With a reliable Wi-Fi connection and a supported service, you may be able to make calls in places where cellular calls struggle.
2. Potentially Clearer Audio
A stable Wi-Fi connection may provide clearer sound than an inconsistent mobile signal. However, poor or congested Wi-Fi can still cause delay, distorted audio or dropped calls.
3. No Separate Calling App
After setup, Wi-Fi calling generally works through your phone’s regular calling interface. Your contacts do not need to install anything. Depending on your operator and plan, calls and texts may count towards your usual allowances; but charges vary.
The Drawbacks to Consider
1. It Relies on Wi-Fi Quality
Weak coverage, router problems, network congestion or an unstable broadband connection can affect call quality. A strong Wi-Fi signal does not always mean the internet connection is reliable.
2. Calls May Drop When Networks Change
Some phones can switch a call from Wi-Fi to cellular service when you leave Wi-Fi coverage, but the handover might not always be as flawless as it sounds. Device compatibility and settings do matter, including Voice over LTE (VoLTE) support where required. A call can still disconnect during a network change.
3. Support and Costs Vary
Not every operator, phone, or country supports Wi-Fi calling, and it is not automatically free. Charges may depend on your plan, the number called and whether you are travelling internationally. International calls may follow different billing rules even when routed over Wi-Fi. So, it is important to check your operator’s terms before dialling, especially while roaming.
In Nigeria, confirm availability with your own network provider rather than assuming the setting will work. Also, do not confuse Wi-Fi calling with VoLTE: MTN Nigeria describes VoLTE as calls over its 4G cellular network, which is different from calling over Wi-Fi.
In case you missed it, here’s a quick read on MTN Nigeria launching nationwide VoLTE call service
4. Emergency Calls Need Care
Emergency-call handling differs by country and operator. If cellular service is unavailable, an emergency call may use Wi-Fi and rely on device location data or an address registered during setup. That information may not always reflect where you are now, so, keep any registered emergency address updated and follow your operator’s guidance.
For the Nigerian tech geeks, read this interesting guide to the digital world
5. Security Is Not Automatic
Wi-Fi calling generally uses an encrypted connection to the operator, but implementation flaws can still create risks. In 2024, CISPA researchers reported vulnerabilities at 13 of 275 mobile operators they examined, potentially affecting around 140 million customers. The researchers said updates to address the flaws had been implemented. Keep your phone software updated and use trusted Wi-Fi networks where possible. Public networks carry the usual risks of connecting through infrastructure you do not control.
While you’re contemplating on using Wi-Fi calling or not, here are some amazing tech facts for your digital kids
Should You Enable Wi-Fi Calling?
If cellular reception is poor where you spend time and your Wi-Fi is reliable, Wi-Fi calling is worth considering, as it lets you keep using your usual number without asking contacts to switch apps.
Before enabling it though, check operator and device support, confirm any charges, update your software and understand how emergency calls are handled. Wi-Fi calling can help with weak mobile reception, but it cannot guarantee that every call will stay connected.
