Google Fi is out ahead of us in terms of carrier relationships, which is how they enable #2. The fact that Google has worked on Hangouts for so long makes #1 a

Google Fi is out ahead of us in terms of carrier relationships, which is how they enable #2. The fact that Google has worked on Hangouts for so long makes #1 and #3 possible. Unless you're talking about native carrier WiFi calling in #1, in which case see my previous point. We have the engineering background to build all those things, but we're limited by our carrier partners (currently just Sprint) for some. They haven't enabled WiFi calling on any wholesale accounts for instance, and have said that won't happen until 2017 at the earliest. At this point our best feature is that you get the simple pricing of Google's Fi, on an iPhone or any other Sprint-compatible device.