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

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Updated 12 mins ago - World

Hong Kong media tycoon Jimmy Lai arrested under national security law

Media tycoon Jimmy Lai at the Next Digital offices in Hong Kong in June. Photo: Anthony Wallace/AFP via Getty Images

Hong Kong pro-democracy activist Jimmy Lai has been arrested for "collusion with foreign powers," said Mark Simon, an executive at the tycoon's media firm Next Digital Monday morning local time.

Why it matters: He was arrested under the new national security law that gives Beijing more powers over the former British colony. Lai is the most prominent person arrested under the law, which prompted the U.S. to sanction Chinese officials, including Hong Kong leader Carrie Lam, over Beijing's efforts to strip the territory of its autonomy.

Updated 2 hours ago - Politics & Policy

Coronavirus dashboard

Illustration: Sarah Grillo/Axios

  1. Global: Total confirmed cases as of 8:30 p.m. ET: 19,769,560— Total deaths: 729,351 — Total recoveries — 12,030,061Map.
  2. U.S.: Total confirmed cases as of 8:30 p.m. ET: 5,041,573 — Total deaths: 162,913 — Total recoveries: 1,656,864 — Total tests: 61,792,571Map.
  3. Politics: Pelosi says states don't have the funds to comply with Trump's executive order on unemployment — Mnuchin says Trump executive orders were cleared by Justice Department.
  4. States: New York reports lowest rate of positive coronavirus test results since pandemic began
  5. Public health: Ex-FDA head: U.S. will "definitely" see 200,000 to 300,000 virus deaths by end of 2020. 
  6. Schools: Nine test positive at Georgia school where photo showing packed hallway went viral — How back-to-school is playing out in the South as coronavirus rages on.

New York reports new low positive coronavirus test rate

People physically distancing at tables in New York City's Times Square in June. Photo: Johannes Eisele/AFP via Getty Images

New York Gov. Andrew Cuomo (D) announced Sunday 515 people, or 0.78% of those tested, returned a positive reading for COVID-19 the previous day.

Why it matters: It's the lowest single-day positive rate since the start of the pandemic. It's another sign that the state that was once a global coronavirus epicenter is curbing the spread of the virus. "Our daily numbers remain low and steady, despite increasing infection rates across the country, and even in our region," Cuomo said in a statement. "But we must not become complacent: Everyone should continue to wear their masks and socially distance."

Go deeper: Cuomo says all New York schools can reopen for in-person learning