Google Fi adds support for a second 5G network, won't say which one

Google has announced that its Google Fi cell service will support a second 5G network, in addition to T-Mobile, but the identity of the second network is not disclosed. Google's MVNO (mobile virtual network operator) initially supported both T-Mobile and Sprint, but switched to a single-network service after T-Mobile acquired Sprint. The new 'super network' upgrade allows phones connected to Fi to hop between T-Mobile 5G and the second 5G network for the best connectivity. Google's blog post does not mention the second network, but a spokesperson declined to name it. The second network is likely either AT&T or Verizon, based on the shape of the unserved regions on the Fi coverage map. MVNOs do not always disclose their network partners, and Google's Fi FAQ no longer confirms T-Mobile as a network partner.