U.S. Cellular joins Google s existing network partners T-Mobile and Sprint.

Instead, it can switch between partners to select the best network available at any given time.

The problem with this is that you need to use one of Google s own Nexus phones the 6P, 5X or Nexus 6 to use Fi because other phones aren t able to perform the seamless network handoffs necessary to make this work.

We re constantly adapting to consider how factors like new cell towers and newly-available radio frequencies are impacting real-world speeds.

Google says its users are able to spend about 95 percent of their cellular time on LTE networks and have a connection 99 percent of the time.

Fi s plans start at $20 per month for unlimited domestic calls and texts, with an additional $10 per GB of data per month.

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