As expected, Google on Wednesday made its big announcement that it's becoming a mobile virtual network operator (MVNO) and will star offering its own wireless service. The service, called Project Fi, will offer seamless switching between Wi-Fi and Sprint and T-Mobile's networks, as Google had previously reached an agreement with the two carriers for the rights to resell access to their networks. The service will also only charge users for the amount of data they actually use instead of making them buy a lump sum of data each month that they may not need.
Google takes on Verizon and AT&T by unveiling its wireless service – everything you need to know