Free Wi-Fi calling utilizes technology known as Unlicensed Mobile Access (UMA) or Generic Access Network (GAN), eliminating the need for mobile network support. This technology enables your iPhone to make and receive calls over standard Wi-Fi networks.
Requirements for this include: T-Mobile only supports Wi-Fi calling for iPhone 5C, iPhone 5S, iPhone 6, and iPhone 6 Plus. Follow these steps to activate Wi-Fi calling:
Step 1: Go to Settings
Step 2: Navigate to Phone
The Wi-Fi calling feature proves highly beneficial for users; however, it still faces various limitations, such as reliance on service providers and support for high-end iPhone models. Vietnamese users must await future updates to access this special feature.
For more information, visit: https://Mytour.vn/enable-wifi-calling-on-ios-8-939n.aspx
