Wi-Fi calling lets a compatible phone place calls over a wireless internet connection when the carrier and plan support the feature. It can be useful in buildings where cellular reception is limited, although call quality still depends on the Wi-Fi network. Check your carrier's support information first, because eligibility, emergency calling rules, and available settings vary by region and plan.
On many phones, the control appears under cellular, mobile network, or phone settings. Turn on Wi-Fi calling and follow any prompts to confirm an emergency address or other required information. Menu names differ by device, so search settings or consult the manufacturer's instructions if the option is hard to find. If you use two lines, check which line has Wi-Fi calling enabled and how calls are routed.
Test the feature in a place where your cellular signal is weak but your Wi-Fi is dependable. Make a brief call and listen for delays, dropouts, or unclear audio. If it does not work, restart the phone, check that Wi-Fi is connected, and confirm the carrier has enabled the service on your account. Remember that switching networks during a call can affect continuity. Keep emergency contact information current and understand how emergency calls are handled by your carrier.