#1 It runs on three networks
Google’s Project Fi wireless service is a Mobile Virtual Network Operator (MVNO), that flits between different networks, running on the infrastructure provided by U.S Cellular, T-MOBILE and Sprint. The aim being to provide a cheaper service, and one that can choose the strongest signal. By using multiple networks it aims to ensure you always have the fastest connection.
#2 It uses Wifi for calls and texts
Available Wifi connections are also chosen according to their strength, and automatic access is provided to more than a million Wi-Fi hotspots. It can also use Wifi for calls and texts, which means you can keep using your phone in places without mobile data coverage.
#4 It works in over 135 different countries
The project allows you to use your phone as normal, with normal charges, in 135 different countries outside of the US. This makes it particularly useful for international travellers. However, it is still only available only for accounts in the US, and it remains to be seen whether it will roll out to Europe or beyond.
#5 There are no contracts or commitments involved.
A quick online sign up is all that is needed, and then you can use Project Fi for as long as you want. No annual contract, just simple monthly billing. The value of any unused data is deducted from the cost of the next months bill.