What is WiFi Calling And How Does It Work?

Understanding WiFi Calling

WiFi Calling, or Voice over WiFi, is a technology that enables users to make and receive calls using a WiFi network rather than a cellular network. This comes in handy in areas with weak cellular signals, like basements or buildings with thick walls. It’s a game-changer for indoor coverage and a savior in areas with poor network signals.

The history of WiFi Calling

WiFi Calling evolved from the early days of Voice over Internet Protocol (VoIP), which was introduced in the early 2000s as a standard feature integrated into modern smartphones. The mid-2000s witnessed the integration of VoIP on mobile devices through apps like Skype, allowing users to make calls over WiFi networks.

In the 2010s, major carriers adopted WiFi Calling as a solution for areas with poor cellular reception, coinciding with the emergence of Voice over LTE (VoLTE) for high-quality calls over the 4G LTE network. By 2015, WiFi Calling has become a global standard, contributing to uninterrupted voice communication. Today, it is an integral part of smartphones, continually evolving with advancements in 5G technology and WiFi networks.

How does WiFi Calling work?

WiFi Calling often relies on VoLTE, which stands for Voice over Long-Term Evolution. VoLTE enables high-quality voice calls over the 4G LTE network so when you initiate a call, your voice is converted into data packets and transmitted over the LTE network.

If your device detects a strong and stable WiFi signal, it seamlessly hands over the call to VoWiFi. This transition ensures uninterrupted communication and offers a reliable alternative in scenarios where cellular signals might falter.

What are the benefits of WiFi Calling?

One of the benefits is enhanced indoor coverage. WiFi Calling provides a lifeline in areas without stable cellular networks, offering improved connectivity indoors. Another pro to this technology is cost-efficiency because utilizing WiFi for calls, especially when making international calls, does not rely on cellular networks; therefore, do not incur charges as calls usually do with your network provider.

It’s a good thing most modern smartphones support WiFi Calling, and activation is typically straightforward. Users must enable the WiFi Calling feature in their device settings, which typically requires carrier support. Many carriers worldwide have embraced this technology, making it widely accessible. Before making calls over WiFi, you'll have to turn on the feature in your settings.

From Apple Support Official Website

In the Philippines, Smart’s WiFi Calling and VoLTE services are currently available to all Smart Signature and Smart Infinity, as well as select Smart Prepaid and TNT subscribers. To learn more about it, visit the official Smart website.

To make WiFi Calling work like a charm, of course, you need fast Internet! Enter PLDT Home Fiber Plus plans — your smartphone’s sidekick in WiFi Calling, ensuring your calls are smooth and interruption-free!