Archive for the ‘mobile phones’ category

Feb 14, 2020

The world’s biggest smartphone conference was just canceled because of coronavirus concerns

Posted by in categories: biotech/medical, mobile phones

Mobile World Congress, or MWC, was going to proceed because there were still 2,800 exhibitors. Now it’s being canceled.

Feb 12, 2020

Samsung Galaxy S20 Ultra 100X Zoom is MIND BLOWING!

Posted by in category: mobile phones

Indoor Zoom test. More Last minute leaks, Galaxy S20 Series Trailer with Full Design, Hands on look & More.

★ Samsung Galaxy Buds Plus GIVEAWAY

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Feb 12, 2020

Researchers develop clothes that can charge your phone

Posted by in category: mobile phones

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Feb 12, 2020

No, there’s no evidence that cell phones give you cancer

Posted by in categories: biotech/medical, mobile phones

A new review from the FDA says it finds no evidence linking the two, but that research should continue.

The findings: The report reviewed 125 experiments carried out on animals and 75 on humans between 2008 and August 2019. In summary, the FDA said that there’s “no consistent pattern” to link radiofrequency radiation, or RFR, to tumors or cancer.

Rats don’t use cell phones the way humans do. An overarching problem with the animal studies in the review is that they don’t mimic how humans actually use their phones. Animal studies often douse a rat’s entire body in radiation at levels that are far higher than what humans are normally exposed to when we use cell phones. The human studies were also flawed, relying only on questionnaires from family members or observational data.

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Feb 11, 2020

Galaxy S20 Ultra is the first phone with a whopping 16GB RAM

Posted by in category: mobile phones

When phones put PCs to shame.

Samsung’s recently launched top-of-the-line Galaxy S20 Ultra is the first smartphone ever to feature a whopping 16GB of LPDDR5 RAM.

Feb 9, 2020

Metamaterial: Mail armor inspires physicists

Posted by in categories: mathematics, mobile phones, physics

Circa 2017

The Middle Ages certainly were far from being science-friendly: Whoever looked for new findings off the beaten track faced the threat of being burned at the stake. Hence, the contribution of this era to technical progress is deemed to be rather small. Scientists of Karlsruhe Institute of Technology (KIT), however, were inspired by medieval mail armor when producing a new metamaterial with novel properties. They succeeded in reversing the Hall coefficient of a material.

The Hall effect is the occurrence of a transverse electric voltage across an electric conductor passed by current flow, if this conductor is located in a . This effect is a basic phenomenon of physics and allows to measure the strength of magnetic fields. It is the basis of magnetic speed sensors in cars or compasses in smartphones. Apart from measuring magnetic fields, the Hall effect can also be used to characterize metals and semiconductors and in particular to determine charge carrier density of the material. The sign of the measured Hall voltage allows conclusions to be drawn as to whether in the semiconductor element carry positive or negative charge.

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Feb 8, 2020

All Google phones will now screen robocalls, here’s how to turn it on

Posted by in categories: biotech/medical, mobile phones

If you’re tired of robocalls you might want to consider one of Google’s Pixel phones. On Thursday, Google announced that its Call Screen feature, which automatically blocks known robocallers in Google’s database, is rolling out to all Pixel phones this week. It was previously only available on the newest Pixel 3 and Pixel 4 devices. (The original Pixel phone, which launched in 2016, stopped receiving software updates last year, but Google says it’ll still get Call Screen.)

Robocalls may be driving you nuts. According to the YouMail robocall index, which is compiled from the YouMail app that’s built to also block robocalls, there were 4.7 billion robocalls placed in the U.S. in January 2020, or 1,800 a second and 14.4 calls per person. Some U.S. carriers, like AT&T, Verizon, T-Mobile and Sprint are working in the background to prevent robocalls, too. Though sometimes they still sneak through or only work on certain phones.

And other companies, like Apple, let you automatically send calls that are received from people who aren’t in your address book right to voicemail. But sometimes you miss an important call from someone, like a doctor whose number you might not have saved.

Feb 6, 2020

3D Printed Heads Can Unlock Phones. What Does that Mean for Biometric Security?

Posted by in categories: 3D printing, cybercrime/malcode, mobile phones, privacy, robotics/AI

Facial recognition technology is likely not as safe as you may have thought. This was illustrated by a recent test where 3D printed busts of peoples’ heads were used to unlock smartphones.

Out of five tested phones, only one refused to open when presented with the fake head.

Other biometric security measures are also showing less resilience to hacking than you might expect. A group of Japanese researchers recently showed it was possible to copy a person’s fingerprints from pictures like the ones many of us post on social media.

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Feb 6, 2020

This Renewable Energy Device Powers 100 LEDs with a Single Drop of Water

Posted by in categories: mobile phones, sustainability

What if an umbrella could charge your phone? By tweaking well-known principles, scientists have created a highly efficient generator that can pump out lots of renewable energy with just a bit of water.

Feb 5, 2020

MIT’s solid-state battery breakthrough may see phones last for days

Posted by in categories: chemistry, mobile phones

One of the many ways scientists hope to improve the performance of today’s lithium batteries is by swapping out some of the liquid components for solid ones. Known as solid-state batteries, these experimental devices could greatly extend the life of electric vehicles and mobile devices by significantly upping the energy density packed inside. Scientists at MIT are now reporting an exciting advance toward this future, demonstrating a new type of solid-state battery architecture that overcomes some limitations of current designs.

In a regular lithium battery, a liquid electrolyte serves as the medium through which the lithium ions travel back and forth between the anode and cathode as the battery is charged and discharged. One problem is that this liquid is highly volatile and can sometimes result in battery fires, like those that plagued Samsung’s Galaxy Note 7 smartphone.

Replacing this liquid electrolyte for a solid material wouldn’t just make batteries safer and less prone to fires, it could also open up new possibilities for other key components of the battery. The anode in today’s lithium batteries is made from a mix of copper and graphite, but if it were made of pure lithium instead, it could break the “energy-density bottleneck of current Li-ion chemistry,” according to a recent study published in Trends in Chemistry.

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