An anonymous reader quotes Forbes: How do you communicate when the government censors the internet? With a peer-to-peer mesh broadcasting network that doesn't use the internet.

That's exactly what Hong Kong pro-democracy protesters are doing now, thanks to San Francisco startup Bridgefy's Bluetooth-based messaging app. The protesters can communicate with each other — and the public — using no persistent managed network...

While you can chat privately with contacts, you can also broadcast to anyone within range, even if they are not a contact.

That's clearly an ideal scenario for protesters who are trying to reach people but cannot use traditional SMS texting, email, or the undisputed uber-app of China: WeChat. All of them are monitored by the state.
Wednesday another article in Forbes confirmed with Bridgefy that their app uses end-to-end RSA encryption -- though an associate professor at the Johns Hopkins Information Security Institute warns in the same article about the possibility of the Chinese government demanding that telecom providers hand over a list of all users running the app and where they're located.

Forbes also notes that "police could sign up to Bridgefy and, at the very least, cause confusion by flooding the network with fake broadcasts" -- or even use the app to spread privacy-compromising malware. "But if they're willing to accept the risk, Bridgefy could remain a useful tool for communicating and organizing in extreme situations."

With the Huawei Mate 30 launch right around the corner on September 19th, Huawei announced the new flagship chipset that will be powering the phone. AnandTech reports: Huawei is for the first time splitting its [5G] strategy, with two versions of the Kirin 990. These versions will officially be known as the Kirin 990 and the Kirin 990 5G. The (4G) I've put here is simply to add a differentiator to tell them apart. The two Kirin chipsets are, and a standard base level, pretty much the same. Same core configuration, same camera support, same memory, same storage. However, in a few key areas beyond the modem, there are differences, such as NPU performance and core frequencies.

The Kirin 990 5G is a true unified design, supporting Sub-6 GHz 5G networks on both SA and NSA architectures. In order to keep the die size in check, Huawei is using TSMC's latest 7+ manufacturing process with EUV, which helps enable a smaller die size for the sorts of devices this chip will be going into. As mentioned, one of the key elements to the Kirin 990 5G is its use of TSMC's 7FF+ with EUV, which enables the chip to have a small(er) die size. We are told the chip is over 100mm2, which is up from 74.13 mm2 on the Kirin 980 (TSMC 7nm) and 96.72 mm2 on the Kirin 970 (TSMC 10nm), possibly making it Huawei's largest smartphone SoC to date. This is compared to the Kirin 990 4G version, which is around ~90 mm2, but is built on the same 7nm process as the Kirin 980, making it a little bigger. Transistor counts for the two chips put the 990 5G at 10.3 billion, while the 990 4G is ~8 billion. XDA Developers has a spec sheet comparing the Kirin 980 against the Kirin 990 and 990 5G.

Samsung's $2,000 foldable smartphone was scheduled to launch earlier this year, but was delayed after several major U.S. tech journalists experienced device-breaking display failures with their review units. This caused Samsung to push back the launch date and go back to the drawing board to try and fix these issues.

At IFA in Berlin this week, Samsung brought an updated version of the Galaxy Fold that supposedly fixes many of the issues that plagued the original model. The Verge reports: You need to look closely at the updated Galaxy Fold to spot what's new, but there are some key changes in a variety of areas. The biggest update is that Samsung has now extended the protective film to under the bezels of the device so you can no longer peel it off. I tried to peel it off multiple times and failed, as it's beyond the bezel and impossible to get your fingernails close to. We'll need to test this fully, but I'm confident that Samsung has addressed this particular problem.

Most of the other changes are related to the hinge. It feels a little sturdier than before, and the gaps where the hinge meets the display have been trimmed down. Even the gap when the device is closed has been shrunk slightly, which should add up to less debris getting close to the hinge or displays. Visually, the other big change is that the display now has plastic protection caps at the bottom and top that further block debris from getting underneath it. These are noticeable when you unfold the device, but they should hopefully help stop dirt from getting in the hinge and causing issues. I didn't have enough time to throw a bunch of dirt and dust at the device, so it's hard to say whether Samsung has fixed this particular issue, but it's clear that a lot of work has been done here. Furthermore, Samsung has also "added layers of metal underneath the display to make it feel sturdier, particularly when you touch and interact with the display," reports The Verge. "This is less noticeable by itself, but when you combine it with the hinge changes, it certainly comes off like a more polished device overall."

An anonymous reader quotes a report from Ars Technica: Android 10 is finally finished! The next big Android update, which we've been examining for most of the year as the "Android Q Beta," starts rolling out to devices today. As usual, Android 10 is arriving on Pixel phones first (even the three-year-old Pixel 1), and Google says it is "working with a number of partners to launch or upgrade devices to Android 10 this year." Google has introduced a new branding strategy for Android, by the way, so there's no "Q" snack name with this release. In 2019, it's just "Android 10." Android 10 brings a number of changes to the world's most popular mobile operating system.

First up, devices are getting "fully gestural" navigation, which lets you navigate around the phone with swipe gestures. Just like the implementation on the iPhone X, gesture navigation removed the need for a dedicated space for navigation buttons, allowing for more space for app content. There's finally full support for a dark theme, which will turn the entire system UI and any supported apps from the usual black text on a white background to white text on a black background. (That option significantly reduces the amount of light a phone puts out and saves battery life on OLED displays.) Google has also promised dark mode support for "all" of the Google apps in time for Android 10's launch, so we should be seeing updates to Gmail, Google Play, Google Maps, and a million other Google apps sometime soon. Other features of Android 10 include a faster share sheet, a "bubbles" API for floating apps, 230 new emoji, improved security and privacy options, and smarter notification panel.

The Trump administration slapped tariffs on roughly $110 billion in Chinese imports on Sunday, marking the latest escalation in a trade war that's inflicting damage across the world economy. China retaliated. From a report: The 15% U.S. duty hit consumer goods ranging from footwear and apparel to home textiles and certain technology products like the Apple Watch. A separate batch of about $160 billion in Chinese goods -- including laptops and cellphones -- will be hit with 15% tariffs on Dec. 15. President Donald Trump delayed part of the levies to blunt the impact on holiday shopping. Investors sought the safety of the yen, which edged higher against the dollar as currency markets opened for trading. The offshore yuan pared some losses to trade at 7.1682 per dollar Monday at 10:38 a.m. in Beijing after the PBOC set the fixing rate stronger than all estimates. Asian stocks fell with U.S. equity futures after the tariffs kicked in, even though the measures had been widely anticipated. S&P 500 futures opened 1% lower before paring losses, and Treasury contracts advanced.

According to Nikkei Asian Review, Google is shifting production of its Pixel smartphone from China to Vietnam "as it seeks to build a low-cost supply chain in Southeast Asia that will serve as a springboard for its growing hardware ambitions." From the report: Working with a partner, Google started work this summer to convert an old Nokia factory in the northern Vietnamese province of Bac Ninh to handle production of Pixel phones, two people familiar with the company's plans said. This is the same province where Samsung developed its smartphone supply chain a decade ago, so Google will have access to an experienced workforce.

The push to develop a Vietnamese production base reflects the twin pressures of higher Chinese labor costs and the spiraling tariffs resulting from the trade war between Washington and Beijing. The U.S. internet giant intends to eventually move production of most of its American-bound hardware outside of China, including Pixel phones and its popular smart speaker, Google Home, according to the sources. Under current plans, Google will shift some production of the Pixel 3A phone from China to Vietnam before the end of this year, the people said. For its smart speakers, some production is likely to be moved to Thailand, sources said. But the company's new product development and initial production for its hardware lineup will still be in China, they said. "Google are likely to keep some activities inside China. The U.S. company knows that if it is going to be serious about making hardware, it could never give up the massive Chinese market," one of the sources said. "However, they also understand that, due to rising costs and the macro-environment, they need to have production outside China for the long term in order to support their hardware manufacturing."

An anonymous reader quotes a report from MacRumors: The Chicago Tribune recently launched an investigation into the radiofrequency radiation levels output by popular smartphones, and found that some of Apple's iPhones are allegedly emitting radiofrequency radiation that exceeds safety limits. According to the newspaper, it contracted an accredited lab to test several smartphones according to federal guidelines. iPhones were secured below clear liquid formulated to simulate human tissue while probes measured the radiofrequency radiation the liquid absorbed.

Several iPhones measured over the legal safety limits in the tests, but the worst performer was the iPhone 7. Its radiofrequency radiation exposure was over the legal limit and more than double what Apple reported to federal regulators. The iPhone X was slightly over limits in some tests, as was the iPhone 8, while the 8 Plus stayed within the legal range. iPhones were tested twice after Apple provided feedback on the testing method. The modified test "added steps intended to activate sensors designed to reduce the phones' power." In these modified tests, where a reporter held the iPhone to activate the sensors in question, the iPhone 8 was under the 5mm limit, but the iPhone 7 models were not. Apple disputed the results found by The Chicago Tribune and said that the lab did not test the iPhones in the same way that Apple does, though Apple would not specify what was done wrong in the testing. Apple also said the modified testing had been done wrong. The investigation also found smartphones from Samsung, Motorola, and Vivo also demonstrated radiofrequency radiation levels that exceed FCC guidelines. However, it's worth noting that testing was done in a way to simulate the worst possible exposure conditions.

The FCC said that it will be conducting its own tests over the next couple of months. "We take seriously any claims on non-compliance with the RF (radiofrequency) exposure standards and will be obtaining and testing the subject phones for compliance with FCC rules," agency spokesman Neil Grace said.

San Mateo High School administrators have instituted a new policy to lock up students' cellphones. "Each school day, nearly 1,700 students place their devices in a Yondr pouch that closes with a proprietary lock," reports NBC News. "School administrators unlock them at the end of the day." The goal is to help students focus on the teacher and other students. From the report: While administrators and teachers say they have already noticed a positive effect on students, the policy has elicited mixed reactions from researchers who argue its long-term effectiveness. Devices remain in the student's possession, but they aren't able to access them, the school said. The program was funded with a $20,000 grant. The pouches have been assigned to students at no cost, but losing one will cost the high-schoolers a $25 replacement fee.

Some technology experts feel the new policy is a step in the right direction and will curb distraction in the classroom. "Taking cellphones out of the classroom is a no-brainer," said Calvin Newport, a professor of computer science at Georgetown University. Students tend to perform worse when they have access to network connectivity in the classroom, he said. "The ability to be free of distraction and concentrate on things is increasingly valuable, so it's a good general function of our schools to be a place where our students get trained to keeping their concentration on one thing at a time," he added.

While many researchers have focused on the benefits of cutting out devices from the classroom, others worry about taking away something young people depend on. Larry Rosen, a research psychologist at California State University, said young people constantly check their phones to alleviate anxiety. They are anxious about staying on top of things, and that anxiety will build up if they are forced to ditch the devices cold turkey, he added. Taking away phones doesn't work for everyone, he argues. Instead, he believes "technology breaks" are a much happier medium.

"The crowdfunded phone of the future was a multimillion-dollar scam," reports the Verge: In 2014, Jeffrey Tschiltsch opened an email from Indiegogo and saw the future of computing. The email showed something called the "Dragonfly Futurefon," a kind of computer-phone hybrid. The Futurefon's page showed a sleek, palm-sized touchscreen that slotted into a laptop dock, then folded flat and flipped open again, revealing a second screen and a full-sized laptop keyboard. It could run both Windows and Android, and its creator, a startup called IdealFuture, promised to replace your phone, laptop, and tablet at an incredible price of $799. Dubious but intrigued, Tschiltsch put down a $200 deposit.

Five years later, Tschiltsch still wouldn't have a Futurefon. Instead, he'd be sitting in an Illinois courthouse testifying at the behest of the FBI, which claimed the device was the last step in a decade-long fraud operation that cost victims nearly $6 million. "I always thought it was ambitious," Tschiltsch says now. "It didn't occur to me that the guy had just taken the money."

Tschiltsch is just one of many angry Indiegogo backers who say Futurefon creator Jeff Batio strung them along with lies, excuses, and faked product updates. But the backers aren't just angry with Batio. They're frustrated by how easily a scammer could flourish in the high-risk world of gadget crowdfunding -- and how poorly Indiegogo was equipped to deal with it.
The Futurefon raised hundreds of thousands of dollars, the article reports, adding that Batio also apparently raised $5 million for another dual-screen project. Unfortunately, investors later found out that Batio "had been indicted on fraud charges that spanned 13 years..."

Nobody ever got a Futurefon, and "A jury convicted Batio of 12 mail and wire fraud counts, each carrying a maximum sentence of 20 years in prison."

An anonymous reader quotes a report from The Economist: Many parents and grandparents will grumble about today's screen-obsessed youth. Indeed, researchers find that millennials look at their phones more than 150 times a day; half of them check their devices in the middle of the night; a third glance at them immediately after waking up. And yet, when all screens are accounted for, it is in fact older folk who seem most addicted. According to Nielsen, a market-research firm, Americans aged 65 and over spend nearly ten hours a day consuming media on their televisions, computers and smartphones. That is 12% more than Americans aged 35 to 49, and a third more than those aged 18 to 34 (the youngest cohort for whom Nielsen has data). American seniors "spend an average of seven hours and 30 minutes in front of the box, about as much as they did in 2015," the report says. "The spend another two hours staring at their smartphones, a more than seven-fold increase from four years ago."

Millennials have increased the time they spend on their mobile devices, but it's been largely offset by their dwindling interest in TV. As for teenagers, a report from 2015 by Common Sense Media "found that American teens aged 13-18 spent about six hours and 40 minutes per day on screens: slightly more than Nielsen recorded for 18- to 34-year-olds that year, but less than older generations."

The FCC said on Tuesday that CenturyLink will pay $550,000 to settle an investigation into a practice known as "cramming": when phone companies add unauthorized third-party charges to customer bills. "CenturyLink will also stop billing for most third parties, start refunding affected customer accounts and let customers block future third-party charges," adds CNET. From the report: "Over the years, the FCC has done yeoman's work in fighting cramming and getting major phone companies to stop this practice," Rosemary Harold, chief of the FCC's enforcement bureau, said in a release. "With today's action, another major phone company will stop cramming and prevent unscrupulous third parties from adding fees to bills without prior express consent." CenturyLink has previously said its own internal investigation found no wrongdoing. The company has faced repeated complaints over issues related to alleged billing fraud, including an ongoing $12 billion class action lawsuit.

Long-time Slashdot reader trolman scared this scathing editorial by security researcher Brian Krebs: If you are somehow under the impression that you -- the customer -- are in control over the security, privacy and integrity of your mobile phone service, think again. And you'd be forgiven if you assumed the major wireless carriers or federal regulators had their hands firmly on the wheel. No, a series of recent court cases and unfortunate developments highlight the sad reality that the wireless industry today has all but ceded control over this vital national resource to cybercriminals, scammers, corrupt employees and plain old corporate greed...

Incessantly annoying and fraudulent robocalls. Corrupt wireless company employees taking hundreds of thousands of dollars in bribes to unlock and hijack mobile phone service. Wireless providers selling real-time customer location data, despite repeated promises to the contrary. A noticeable uptick in SIM-swapping attacks that lead to multi-million dollar cyberheists...

Is there any hope that lawmakers or regulators will do anything about these persistent problems? Gigi Sohn, a distinguished fellow at the Georgetown Institute for Technology Law and Policy, said the answer -- at least in this administration -- is probably a big "no."

"The takeaway here is the complete and total abdication of any oversight of the mobile wireless industry," Sohn told KrebsOnSecurity. "Our enforcement agencies aren't doing anything on these topics right now, and we have a complete and total breakdown of oversight of these incredibly powerful and important companies."

Long-time Slashdot reader freelunch reports that Google Voice "has announced via email that they are ending one of their most popular features -- sending transcripts of voice mails via text message. The cited reason is carrier message blocking."

From Google's email: It has come to our attention that certain carriers are blocking the delivery of these messages because they are automated and, at times, contain transcripts that resulted from unsolicited robocalls.

We can no longer ensure these messages will be delivered, so unfortunately we are turning down the feature. We have been slowly rolling out these changes and expect them to be fully deployed by 9 August 2019. No action is needed on your part.

However, the Get voicemail via email continues to be supported. As an alternative, the Google Voice iOS, Android and web apps can always be used to check voicemail and view transcripts.

A new study published in the American Heart Association journal Circulation: Cardiovascular Imaging found that blood pressure can be measured accurately by taking a quick video selfie. An anonymous reader quotes this announcement from the University of Toronto: Kang Lee, a professor of applied psychology and human development at the Ontario Institute for Studies in Education and Canada Research Chair in developmental neuroscience, was the lead author of the study... Using a technology co-discovered by Lee and his postdoctoral researcher Paul Zheng called transdermal optical imaging, researchers measured the blood pressure of 1,328 Canadian and Chinese adults by capturing two-minute videos of their faces on an iPhone. Results were compared to standard devices used to measure blood pressure. The researchers found they were able to measure three types of blood pressure with 95 to 96 per cent accuracy.
Lee co-founded a company to turn their technology into a smartphone app (named Anura) that reports stress-level measurements and resting heart rate from a 30-second video of your face -- with plans to release a new version also returning blood pressure results sometime this fall in China.

The university also notes that the researchers now hope to extend their technology so it can measure blood-gluclose levels and cholesterol.

According to 9to5Google, Google's upcoming Pixel 4 and Pixel 4 XL smartphones will feature 90Hz refresh rates, 6GB of RAM, and a DSLR attachment, among other features not reported until now. From the report: First, the basics: There will be a Pixel 4 and Pixel 4 XL, and they will both more or less have the same features. They are phones. As we've already seen, they will have glass on the front and back, and a large camera bump. The have a sizable top bezel on the front housing the Soli radar chip, the speaker, a single front shooter, and the suite of sensors for face unlock. Other familiar aesthetic flourishes like a colored lock button and the usual 'G' logo on the back are also in tow. Things get a little interesting with the display specs. Pixel 4 and Pixel 4 XL will have 5.7-inch and 6.3-inch OLED displays, respectively -- the smaller is Full HD+, while the larger is Quad HD+. We can confirm now, though, that both will be 90 Hz displays, a feature Google is planning to call "Smooth Display."

We also have word on the Pixel 4 and Pixel 4 XL camera specs. There are two sensors on the rear, one of which is a 12MP shooter with phase-detect auto-focus. Also, confirming details that we unearthed in the Google Camera app, the other rear sensor on the Google Pixel 4 and Pixel 4 XL is a 16MP telephoto lens. Another interesting tidbit on the camera side: We're told Google is developing a DSLR-like attachment for the Pixel 4 that may become an available accessory. In other Pixel 4 specs, the smaller 5.7-inch Google Pixel 4 will have a 2,800 mAh battery, while the larger model will have a 3,700 mAh battery. That means, compared to last year, the smaller Pixel will have a slightly smaller battery (down from 2,915 mAh), while the larger Pixel will have a notably beefier one (up from 3,430 mAh). Both devices will pack the Snapdragon 855, get an appreciated bump to 6GB of RAM, and will be available in both 64GB and 128GB variants in the United States. Finally, we can confirm that both Pixel 4 models will have stereo speakers, the Titan M security module that was introduced with the Pixel 3, and of course, the latest version of Android with 3 years of software support. We're also told to expect that, like previous years, Google will show off some new Assistant features that will be exclusive to Pixel 4.

An anonymous reader quotes a report from Motherboard: Netflix thought I was four different people. I was being paid through an app to watch its trailers over and over again, racking up digital points I could eventually trade for Amazon gift cards or real cash. But rather than just use my own phone, I bought four Android devices to churn through the trailers simultaneously, bringing in more money. I made a small "phone farm," able to fabricate engagement with advertisements and programs from companies like Netflix, as well as video game trailers, celebrity gossip shows, and sports too. No one was really watching the trailers, but Netflix didn't need to know that. The goal was to passively run these phones 24/7, with each collecting a fraction of a penny for each ad they "watched."

Hobbyists and those looking to make a bit of money across the U.S. have been doing the same, buying dozens or hundreds of phones to generate revenue so they can afford some extra household goods, cover a bill, buy a case of beer, or earn more income without driving for Uber or delivering for Grubhub. The farms are similar to those found overseas, often in China, where rows and rows of phones click and scroll through social media or other apps to simulate the engagement of a real human. Every few months, a video of these Chinese farms goes viral, but in bedroom cupboards, stacks in corners of living rooms, or custom setups in their garage, American phone farmers are doing a similar thing, albeit on a smaller scale. Motherboard spoke to eight people who run farms of various sizes, most of whom are located in the U.S.

No country on earth has benefited from President Trump's trade fight with China more than Vietnam. From a report: The country's factories have swelled with orders as American tariffs cause companies to reconsider making their products in China. Now, more big technology firms are looking to bulk up their manufacturing operations in Vietnam, lifting the ambitions of a nation already well on its way to becoming a powerhouse maker of smartphones and other high-end gadgets. First, though, Vietnam needs to get better at making the little plastic casings on your earbuds.

Vu Huu Thang's company in the northern city of Bac Ninh, Bac Viet Technology, produces small plastic parts for Canon printers, Korg musical instruments, and Samsung cellphones and phone accessories, including earbuds. He said it would be hard for his firm to compete against Chinese suppliers as long as he had to buy 70 to 100 tons of imported plastic material every month, most of it made in China. "Vietnam cannot compare with China," Mr. Thang said. "When we buy materials, it's 5, 10 percent more expensive than China already." And the Vietnamese market is too small, he said, to entice plastic producers to set up plants here.

Millions of first-time internet consumers from the Ivory Coast to India and Indonesia are connecting to the web on smart feature phones that cost only about $25. "[T]hese hybrid phones, fueled by inexpensive mobile data, provide some basic apps and internet access in addition to calling and texting," the Wall Street Journal reports. From the report: While global smartphone sales began sliding last year as markets became saturated, smart feature phone shipments tripled to around 75 million from 2017, according to research firm Counterpoint. Some 84 million are likely to be shipped this year. Even as rich nations start to roll out 5G technologies, some 3.4 billion people around the world remain cut off from the internet, according to We Are Social, another research firm. Most of them already use traditional, unconnected mobile phones, meaning they can easily make the transition to similarly shaped devices capable of high-speed web connections.

Smart feature phones aren't only inexpensive, but they also have physical keypads that are less intimidating than touch screens for those new to the technology. Meanwhile, their batteries last for days, a bonus in places where electricity is unreliable. There is a trade-off for the low price. The devices typically have slower and less powerful components, only basic cameras and their screens are usually just a few inches in size, factors that contribute to their longer battery life. There also are fewer apps available for smart feature phones.

schwit1 shares a report from ScienceAlert: It may sound strange at first, but a team of researchers in Australia has come up with a method to predict your personality traits using just the accelerometer in your phone. Well, that and your call and messaging activity logs. Also, the system works for some traits better than others. But it's an interesting take on how we may find connections through such seemingly unrelated things. In this case, we start at the Big Five personality traits. These have been used in psychology since the 1980's to help classify five dominant parts of our personalities. These five traits are extraversion (outgoing vs reserved), openness (curious vs cautious), neuroticism (confidence vs nervous), agreeableness (compassionate vs detached) and conscientiousness (organised vs easy-going).

The researchers analysed 52 people's phone habits between March 2010 and July 2011. Each participant was given a phone with sensing and collection software on it, which gave the researchers information on when and how much the phone was moving (accelerometer data), as well as the number and time of day of all calls and messages. The participants were also asked to complete a Big Five survey to score their personalities on the five traits. Then, the team also created a list of features related to the aspects of phone use they measured, that might potentially determine personality traits; for example, physical activity on weekend nights might predict extraversion, or the number of calls one makes might predict agreeableness. After crunching the numbers, the researchers found that some of the phone features really did predict some of the personality traits for the 52 participants. The phone data best predicted neuroticism, conscientiousness, and extraversion, but had trouble predicting the other two traits, especially openness. "There's also the issue of whether the team were actually looking at personality traits, or if the personality traits could be masked by other factors," the report adds. "For instance, neuroticism may be associated with different regularity of activity intensity in the night, however we cannot rule out many other possible explanations (e.g. neurotic people are more prone to stress and therefore - if this is the case, anyone with different personality traits that are stressed will still exhibit the same results)."

The study has been published in the journal Computer.

schwit1 quotes IEEE Spectrum: In 2017, members of the mobile telephony industry group 3GPP were bickering over whether to speed the development of 5G standards. One proposal, originally put forward by Vodafone and ultimately agreed to by the rest of the group, promised to deliver 5G networks sooner by developing more aspects of 5G technology simultaneously.

Adopting that proposal may have also meant pushing some decisions down the road. One such decision concerned how 5G networks should encode wireless signals. 3GPP's Release 15, which laid the foundation for 5G, ultimately selected orthogonal frequency-division multiplexing (OFDM), a holdover from 4G, as the encoding option. But Release 16, expected by year's end, will include the findings of a study group assigned to explore alternatives. Wireless standards are frequently updated, and in the next 5G release, the industry could address concerns that OFDM may draw too much power in 5G devices and base stations.

That's a problem, because 5G is expected to require far more base stations to deliver service and connect billions of mobile and IoT devices. "I don't think the carriers really understood the impact on the mobile phone, and what it's going to do to battery life," says James Kimery, the director of marketing for RF and software-defined radio research at National Instruments Corp. "5G is going to come with a price, and that price is battery consumption." And Kimery notes that these concerns apply beyond 5G handsets. China Mobile has "been vocal about the power consumption of their base stations," he says. A 5G base station is generally expected to consume roughly three times as much power as a 4G base station. And more 5G base stations are needed to cover the same area.