Wi-Fi Calling lets your iPhone make and receive calls over Wi-Fi when cellular service is weak or unavailable, as long as your carrier and account support it.
How to Turn On Wi-Fi Calling
- Open Settings.
- Open the cellular/mobile-service settings and select the relevant line if needed.
- Tap Wi-Fi Calling.
- Turn on Wi-Fi Calling on This iPhone.
- Follow any carrier prompts, including emergency-address information.
Menu wording can vary by carrier, region, and iOS version.
Why Is Wi-Fi Calling Missing?
Carrier support is required. Confirm that your carrier and plan support the feature, install available carrier/iOS updates, and restart the iPhone.
Does Wi-Fi Calling Cost Extra?
Billing and international-call treatment are determined by your carrier. Do not assume a call is free simply because it uses Wi-Fi.
Emergency Calls
Your carrier may request an emergency address. Keep that information current, especially if you rely on Wi-Fi Calling where cellular coverage is poor.
Should You Leave It On?
It is useful in buildings with weak cellular reception and reliable Wi-Fi. If calls are unreliable on one network, test another network or temporarily disable Wi-Fi Calling while troubleshooting.
Summary
Enable Wi-Fi Calling from cellular settings and complete the carrier prompts. If the option is absent, verify carrier support first.
Matthew Roberts created this site to help his friends and family with questions that they might have about how to change the settings on their iPhones. It now serves as an archive of iPhone how-to guides to help anyone that stumbles upon this website.