what is fi project
Project Fi. Project Fi is Google's long-rumored (and finally official) program to provide fast and easy cellular service directly to phones. It works by combining access to both T-Mobile and Sprint, with a SIM card that can actively switch between the two without any user intervention.oogle has announced Project Fi, a new program that aims to keep you connected, no matter what network you're on. Beginning as an early access program, Google is working with Sprint and T-Mobile to build Fi. The service is centered around three main areas of focus: high-quality connections,...