Google Project Fi is a wireless service that comes with a simple plan with no contracts or extra fees, 24/7 customer support, and Bill Protection. It also offers several features like international data coverage in 170 countries and territories, spam protection, and data-only SIMs for other devices. Today, Google announced that it is renaming the service as Google Fi and it is expanding the service to iOS and most of the Android devices. However, you won’t get full Google Fi experience on all these devices. For full experience, you need to use a phone designed for Fi—like the Pixel 3, Moto G6, and others.
You can sign-up for Google Fi here.