All compatible phones get reliable coverage, privacy and security features that
protect your personal information, and family features that help your family stay
safer on their phones and build healthy digital habits. Only phones designed for
Fi are built with network-switching technology. Unlocked phones compatible with
T-Mobile's 5G network will have access to 5G on Fi.
Phones designed for Fi are built with a unique technology that keeps you covered by seamlessly switching between multiple major networks and secure Wi-Fi connections. Learn more
Fi is in beta for iPhone®. Bringing your iPhone® to Fi requires some extra setup, like changing a few of your Settings. We'll walk you through it step-by-step, and our support team is always available if you need help. Currently, iPhone® does not have network-switching technology, and 5G is not supported for iPhone®, but you'll still get great coverage. Learn more
Fi works on most phones, but we always recommend checking your phone's compatibility before joining Fi. If your unlocked phone is compatible with T-Mobile's 5G network, you'll have access to 5G on Fi.
5G coverage for iPhone® is not currently supported on Fi. iPhone® is supported by the Fi 4G network.