What is Wi-Fi calling?
Wi-Fi calling is a feature that allows you to make and receive phone calls over a Wi-Fi network rather than using a cellular network. It works by utilizing Voice over Internet Protocol (VoIP) technology to transmit voice data as digital packets over an internet connection.
Here's how Wi-Fi calling generally works:
Activation: To use Wi-Fi calling, you need a compatible device and a carrier that supports the feature. You may need to enable or activate Wi-Fi calling in your device's settings, and your carrier may require registration or verification.
Connection to Wi-Fi network: Once Wi-Fi calling is enabled on your device, it will search for an available Wi-Fi network. You need to connect to a Wi-Fi network with internet access for Wi-Fi calling to function properly. This can be your home or office Wi-Fi network or any other public Wi-Fi hotspot.
Call setup: When you make or receive a call, your device uses the Wi-Fi network to establish a connection with your carrier's server. The server handles call routing and connects your call to the recipient's phone, whether they are on a traditional cellular network or using Wi-Fi calling as well.
Voice data transfer: During the call, your voice data is transformed into digital packets and sent over the Wi-Fi connection to your carrier's server. The server then relays the voice data to the recipient's phone, which can be connected via cellular network or Wi-Fi. The process is bidirectional, allowing both callers to communicate with each other.
Call termination: When you end the call or lose the Wi-Fi connection, the call is disconnected, and your device switches back to the cellular network if available. The transition between Wi-Fi calling and cellular calling is usually seamless.
Wi-Fi calling offers several benefits, especially in low-signal areas where cellular reception is weak. It allows you to make high-quality voice calls over a Wi-Fi network, which can be particularly useful when you're indoors or in a location with a reliable Wi-Fi connection but poor cellular coverage. Additionally, Wi-Fi calling is often free or offered at lower rates when making international calls, potentially saving you money on long-distance charges.
