For those who don't want to read the FAQ or find the video incredibly unhelpful [1]: a. It only supports the Nexus 6 out of the gate. b. It automatically switches you to the "fastest" network available. Partners out of the gate are Sprint and T-mobile. Sounds like it prefers Wifi, then 4G LTE, and then degrades down to 3G or 2G. c. Pricing is $20 for unlimited talk (domestic) and text (domestic and international) and…
Presumably Google is paying them something to compensate for that, but it still seems dumb -- accepting a little money today at the cost of cutting your own throat in the long term. But then there aren't many providers in the US that aren't dumb, so maybe the long-term threat has just been completely missed by them? Who knows...