Common Sense: Amazon, the Elephant in the Antitrust Room

The AT&T case could lead to an expanded view of the content and distribution market, perhaps changing what constitutes antitrust violation.

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Pretty in Pink: T-Mobile Chief Is the Colorful Outlier of Wireless

John Legere was once a conventional numbers guy, but now his brash approach has resulted in a proposed mega-merger for T-Mobile and Sprint.

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Behind T-Mobile-Sprint Merger, a Race to Keep Up With China in 5G

With the U.S. and China vying for tech leadership, the two wireless companies said their union would help America preserve its strategic edge.

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How Would a T-Mobile-Sprint Merger Affect Your Cellphone Bill?

Regulators have favored having more companies competing for wireless customers, a scenario that helped push down prices. But it’s not clear what will happen if T-Mobile and Spring join forces.

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Sprint and T-Mobile Agree to Merge, in Bid to Remake Wireless Market

The two companies are betting that regulators will finally allow the American wireless market shrink to just three national players.

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Tech We’re Using: Covering Disasters With 2 Phones, in Case One Falls in the Mud

Jule Turkewitz, The Times’s correspondent in Denver, often finds herself on mountain roads and unexpected flights. But being prepared for anything means knowing what’s essential.

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Qualcomm’s Former Chairman Said to Explore Taking Company Private

Paul Jacobs, whose father had helped found Qualcomm, is considering taking the chip maker private after months of turmoil at the company.

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Bits: What 5G Will Mean for You

According to global tech and telecom companies that are spending billions of dollars, combined, on the new wireless technology:

■ With 5G, downloading feature-length movies could take less than five seconds.

■ With 4G, downloading feature-length movies could take as long as eight minutes.

Such technology will not come cheap. Carriers and telecom equipment makers will have to install new hardware like cellphone towers in rural areas and tiny mobile hot spots in dense urban areas to reach the 10 gigabits per second target. They will also have to increasingly rely on sophisticated software to manage the expected exponential jump in mobile data traffic. So just as most people’s cellphone bills have risen as they watch more videos and access other entertainment on their mobile devices, expect operators to charge a hefty premium for these new ultrafast services.

Networks that connect millions of new devices

5G is not just about speed. Companies are also preparing for millions of new wireless devices — such as smartwatches and other wearable items, as well as sensors embedded in industrial products — to be connected to the next generation of cellphone networks.

These devices will not use a lot of data (a sensor built into a highway, for instance, will need to send only small amounts of digital information across the network every couple of hours). But when combined, these hundreds of millions — potentially billions — of new sensors will require almost universal connectivity, or the ability to go online no matter where they are, forcing operators to extend their networks to practically every corner of a country.

These devices will potentially be an important new revenue stream for carriers worldwide. Many operators, particularly in Europe, are finding it tough to charge customers more for their increased use of mobile data. But if carriers can persuade businesses in industries like health care as well as industrial conglomerates like General Electric to sign up for new mobile Internet services that connect tiny sensors to the Internet, then operators may have stumbled onto a new way of making money.

Driverless cars with extremely fast response times

If 5G can offer ultrafast mobile Internet speeds, then why should you care about how quickly one device can communicate with another? In short, you shouldn’t. And as current mobile networks offer so-called latency, or digital response times, of around 50 to 80 milliseconds (the time it takes for a web page to load on your smartphone), reducing that speed to a mere millisecond — the goal under most companies’ 5G plans — might not add much to users’ mobile experiences.

Yet that extremely fast response time will be essential for many of the new services that will most likely be offered on 5G networks. A prime example is driverless cars. These machines will have to communicate almost in real time with everything around them to avoid cyclists and other obstacles. That can happen only if carriers offer one-millisecond latency, something that may become a lifesaver if autonomous cars become a reality.

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