Google Pixel and Google Pixel XL will be available for Project Fi subscribers to use
Project Fi is the hybrid Wi-Fi/Cellular carrier run by Google. When in the range of a Wi-Fi hotspot, Project Fi subscribers take advantage of that signal. When out of Wi-Fi range, the subscriber's handset figures out which of three cellular carriers is offering the best signal at the moment. Those three cellular partners of Profect Fi are T-Mobile, Sprint and U.S. Cellular.
The 32GB Pixel XL is priced at $769, or $32.04 a month over two years. The 128GB Pixel XL will ring up at $869, or 24 monthly payments of $36.20.
Project Fi is priced at $20 a month for unlimited talk and text. Data is priced at $10 per GB. Any money spent on unused data for a month is refunded to the customer.
source: Project Fi
Things that are NOT allowed: