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Illustration: Sarah Grillo, Rebecca Zisser/Axios

What's a G? The mobile industry refers to new "generations" or Gs each time it introduces a new industry-wide technical standard and rebuilds the fundamentals of mobile data networking. That's been happening at roughly a once-a-decade pace.

How it works: The initial version of 5G builds on today's LTE networks but introduces a new type of radio technology that responds more quickly, moves data faster, and uses less power.

Sound smart: Here are some key 5G terms.

  • Small cells — as the name implies, these devices for providing network service are smaller than a traditional cell tower but as a result have to be placed much more closely to one another. Critical to 5G, carriers have also been using small cells to improve their 4G LTE coverage and capacity in cities.
  • Latency — the amount of delay, or lag in response, in a network. One of 5G's main advantages, along with faster speeds once a response has started.
  • Spectrum — the frequency of airwaves used to carry, among other things, cell phone signals. 5G uses a wide swath of airwaves, including higher frequencies than have been used in the past.
  • Millimeter wave — This ultra-high-frequency spectrum is key getting the fastest speeds out of 5G. These signals are also fragile, traveling comparatively small distances and easily blocked by buildings and other objects.

Go deeper: How 5G works

Go deeper

The massive early vote

Illustration: Sarah Grillo/Axios

Early voting in the 2020 election across the U.S. on Friday had already reached 61.7% of 2016's total turnout, according to state data compiled by the U.S. Elections Project.

Why it matters: The coronavirus pandemic and its resultant social-distancing measures prompted a massive uptick in both mail-in ballots and early voting nationwide, setting up an unprecedented and potentially tumultuous count in the hours and days after the polls close on Nov. 3.

Republicans gear up for day-of and post-Election Day litigation

Voters wait in line to cast their early ballots Photo: Joe Raedle/Getty Images

Republican Party officials say they're already looking to Pennsylvania, Minnesota and Nevada as likely battlegrounds for post-election lawsuits if the results are close.

The big picture: As pre-election lawsuits draw to a close, and with President Trump running behind Joe Biden in national and many battleground state polls, Republicans are turning their attention to preparations for Election Day and beyond, and potential recounts.

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