But this new US MVNO is limited to Nexus 6 smartphone owning invitees. Google has, as expected, launched a new mobile network service in which it essentially operates as an MVNO. It will provide subscribers, who all pay a flat fee of $20, unlimited calls and texts with an additional $10 per GB of data. It runs off the back of the T-Mobile and Sprint networks as well as making use of Wi-Fi hotspots as and when available.

Google's aim with launching Project Fi is that communications and connectivity services "keep pace" with the advancements offered by our mobile devices and provide mobile services that are "fast everywhere, easy to use, and accessible to everyone." With mobile network switching between T-Mobile and Sprint in the USA, depending upon which is the fastest available and the auto connection to over a million Wi-Fi hotspots Google sounds pretty confident of shaking up the US mobile network industry.