Project Fi initially launched with support for just one phone (the Nexus 6) back in 2015. It's since expanded to the Pixel series and select devices from Motorola and LG, and according to what appears to have been a broken embargo, Project Fi is considerably expanding its phone support once more.
Per the BGR post that has since been taken down, Project Fi will soon allow you to bring over any phone from Samsung, OnePlus, Motorola, and LG. You'll even be able to use iPhones! As exciting as that is, it's said that these additional phones that aren't sold directly by Project Fi will launch "in beta" and won't have access to the "full Google Fi experience."
In other words, that means these phones that aren't' "designed for Fi" won't be able to seamlessly switch back and forth between T-Mobile, Sprint, and Wi-Fi connections. That's one of the biggest reasons to sign up for Fi, so it'll be interesting to see how Google markets this as something people should seriously consider with that functionality being MIA.
Should more details be released when Google decides to formally announce this news, we'll update this post accordingly.
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