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Post Reply NEW SMARTPHONES are really Dangerous or DUMB
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Posted 9/14/16


NEW SMARTPHONES are really Dangerous or DUMB


Samsug and Sony should be ashamed in the major and somewhat a ripoff blunders.

Really push the tech or add new gimmicks just to make more money ! and people trip over each other to have them

CNET goes deep to the tecnical problems


Here's why Samsung Note 7 phones are catching fire

The Samsung Galaxy Note 7 could explode. Read this to satisfy your burning curiosity.
Sean Hollister mugshot
by Sean Hollister September 14, 2016

You plug your smartphone into the bedside charger and place it on your nightstand with care.

You wake to find your nightstand in flames, smoke billowing everywhere.

Or maybe your Jeep. Your hotel room. Your entire home.

How could this have happened? Simple: your phone is a Samsung Galaxy Note 7 -- and it's one of several dozen (so far) that have spontaneously burst into flames.
Don't leave a Galaxy Note 7 on the charger. Return it for a refund now.


After 35 reported incidents of overheating smartphones worldwide, Samsung made the unprecedented decision to recall every single one of the Galaxy Note 7 smartphones sold. That's said to be 1 million of the 2.5 million that were manufactured. (Since the recall was first announced, the number of explosive Note 7s has at least doubled, according to one estimate.) The company says it's stopped all sales and shipments of the Note 7 and is working with government agencies and cellular carriers around the world to provide refunds and exchanges for the phone.

In every country, the message is the same: return your Samsung Galaxy Note 7 now, just in case something bad might happen to you.

The Note 7 battery fiasco is a huge black eye for Samsung, made worse by the fact that it's playing out just as the company's archrival, Apple, is releasing its new iPhone 7 and iPhone 7 Plus.

But how bad is it, really? What causes a phone to explode this way, and why this specific Samsung phone?

Here's what we know about Samsung's battery woes.
The basics

The science behind phone battery fires is actually pretty simple, and fairly well understood. Much like the infamous exploding hoverboards, phones use lithium ion battery packs for their power, and it just so happens that the liquid swimming around inside most lithium ion batteries is highly flammable.

If the battery short-circuits -- say, by puncturing the incredibly thin sheet of plastic separating the positive and negative sides of the battery -- the puncture point becomes the path of least resistance for electricity to flow.

It heats up the (flammable!) liquid electrolyte at that spot. And if the liquid heats up quickly enough, the battery can explode.

Above: what happens when you puncture a phone's battery.

The Galaxy Note 7 certainly isn't the first phone to catch on fire, or even the first giant recall. By 2004, a spike in cell phone battery explosions prompted this CNET article. In 2009, Nokia recalled 46 million phone batteries that were at risk of short-circuiting. Exploding phones have even killed people.

No brand or model is necessarily safe: for instance, unlucky iPhone owners allegedly suffered nasty burns from exploding devices in 2015 and 2016. And though the Galaxy Note 7 is making headlines right now, other Samsung phones have also burst into flames, like the Galaxy Core that allegedly burned a 6-year-old child earlier this week.

We've known for years that lithium ion batteries pose a risk, but the electronics industry continues to use the flammable formula because the batteries are so much smaller and lighter than less-destructive chemistries. Lithium ion batteries pack a punch, for better or for worse.
Statistically small

Just because a simple phone could turn into a destructive inferno doesn't mean that it will -- even if it's a new Galaxy Note 7

The FAA is strongly warning passengers not to use or charge a Note 7 on a plane, and many airlines are explicitly banning their use.
Donald Sadoway

According to an unnamed Samsung official who spoke to Yonhap News, the Note 7's manufacturing defect affects less than 0.01 percent of all Note 7 handsets sold. Some quick back-of-the-envelope math, and you're potentially looking at fewer than 1,000 defective phones. "It is a very rare manufacturing process error," a Samsung rep told CNET.

But it's the damage those phones can cause, and the frequency with which they're causing damage, that makes the Note 7 dangerous. While CNET tends to hear about just a few exploding devices each year, Samsung's Galaxy Note 7 has caught fire as many as 90 times after only one month on sale.

(That's based on official Samsung tallies of 17 incidents in Korea, 1 in Taiwan, 2 in Australia, and -- yes, it's a little confusing -- the Canadian government's tally of 70 in the United States, a number which has since mysteriously disappeared from Canada's official recall order.)

Samsung wouldn't provide an updated figure for this story. Health Canada couldn't say why the number had been removed by publishing time.
Why Note 7?

What makes the Note 7 different: Samsung may have accidentally squeezed its batteries harder than it should.

According to a unpublished preliminary report sent to Korea's Agency for Technology and Standards (obtained by Bloomberg), Samsung had a manufacturing error that "placed pressure on plates contained within battery cells," which "brought negative and positive poles into contact."

"The defect was revealed when several contributing factors happened simultaneously, which included sub-optimized assembly process that created variations of tension and exposed electrodes due to insufficient insulation tape," a Samsung representative tells CNET.

Or, in plain English: the thin plastic layer that separates the positive and negative sides of the battery got punctured, became the shortest route for electricity to zap across the battery (that's why they call it a "short-circuit"), and became a huge fire risk.

What does pressure have to do with it? MIT materials chemistry Professor Don Sadoway explains that today's cell phone batteries are made by literally pressing together a stack of battery components -- and that battery companies are under pressure (no pun intended) to cram in as much battery capacity as possible.

Samsung's Note 7 battery holds an impressive 3,500mAh, despite its slim profile.

"Imagine if you had a toilet paper roll and it wasn't packed tightly," says Sadoway. With the same size roll, you'd run out a lot quicker.

At first, Sadoway has two theories: perhaps Samsung simply pressed so hard that the positive and negative terminals poked right through the separator and managed to touch.

Or perhaps it's the sponge-like separator itself that got squished. Normally, says Sadoway, the separator allows the liquid electrolyte to pass through pores connecting the negative and positive sides of the battery, even as it keeps the two terminals separate. "If they press really hard, they constrict the pores, the resistance goes up and you generate more heat," says the professor.

But there's another, more interesting theory: perhaps Samsung's batteries are skewering themselves on their own tiny spears.
Why didn't the phones catch fire immediately?

When Sadoway explains these theories, one thing doesn't seem to add up. Today's cell phone batteries generally charge faster (and get hotter) when they're first plugged into the wall, not at the end when they're trickle-charging the last few percent to reach their maximum capacity.

But these Note 7 phones didn't explode right away. In practically every reported instance of a Note 7 catching fire or exploding, it happened after the phone was plugged in and left charging, sometimes overnight.

Then, there's the little matter of how Samsung plans to make these phones safer -- by issuing a firmware update that keeps the Galaxy Note 7 from charging to more than 60 percent of its full capacity. How could that possibly help, if things heat up the moment a phone is plugged into the wall?

Sadoway has a theory -- albeit one without proof. What if only part of the battery was squished improperly, so that the phone couldn't tell when it was 100 percent charged, and kept on charging the cell?

When lithium ion batteries are continually trickle charged, the lithium ions can start to cover the surface of the negative contact in a coating of lithium metal through a process called "plating." And in extreme conditions, that lithium metal can form tiny spikes (called "dendrites") that can poke right through the separator, creating -- you guessed it -- a short circuit.

That would seem to line up with the "variations in tension" Samsung says it found inside the defective battery cells.

"My guess is by backing off to 60 percent charge, they'll be well below the threshold where these things happen," says Sadoway. "Imagine we're trying to fill our gas tank, we don't have a really good regulator, and we don't want to spill the gas all over our shoes. We want to make sure we're cutting off the flow well before this thing gets to overflow conditions."


https://www.cnet.com/news/why-is-samsung-galaxy-note-7-exploding-overheating/

THE NEW i pgone 7 gas critics too but the lesser of 2 evils

Apple iPhone 7 review: By: Scott Stein Reviewed: 14 September 2016
Everything you need in a phone, except the headphone jack


http://www.cnet.com/au/products/apple-iphone-7/review/

The Good Improved front and rear cameras -- now with optical image stabilization -- deliver much improved photos, especially in low light. Water resistant. A faster processor, plus better battery life. More onboard storage than last year's models for the same price.

The Bad No headphone jack (but there's a dongle and compatible wired headphones in the box). Click-free home button takes getting used to. Only the larger 7 Plus has the cool dual camera. Shiny jet-black version scratches easily.

The Bottom Line The iPhone 7's notable camera, battery and water resistance improvements are a worthwhile upgrades to a familiar phone design, but ask yourself if you really need an upgrade...and if the Plus might be a better choice.

Curved wraparound screen? Nope. Wireless charging? Not yet. Are you bothered that the new iPhone looks the same as last year's iPhone? If you are, I understand the feeling. The iPhone 7 doesn't feel like the "whole new thing." Does that bother you? Maybe. But is it better? Yeah, it is. Except for one small 3.5-millimeter thing.

The iPhone 7, as you may have heard (you've certainly heard), has no headphone jack and it looks almost identical to the 2014 iPhone 6 and 2015 iPhone 6S. But there are still compelling reasons to consider an iPhone 7, even if you own last year's model.

The iPhone 7 is now fully water-resistant (it can take a shallow dunking).
The camera takes notably better photos, especially in low light, and adds the optical image stabilization feature previously restricted to the 5.5-inch Plus model.
The battery lasts longer -- probably a couple of hours or more a day, under normal usage. (We'll update this review after we test the battery in our lab.)
The processor is faster, although you might only notice the speed on some intensive games and the video and photo-editing apps.

Let's not diminish the missing headphone jack. The loss will hurt, especially while other iPhones exist that still have a headphone jack onboard. If you want to plug regular headphones into your new iPhone, a process that seemed simple and uncomplicated before, you now need to consider whether you brought the included dongle, or have a pair of Bluetooth headphones. Or your special Lightning headphones that come in the box. But it's surmountable. I lived with the new iPhone 7 and 7 Plus for a week, and this is my story of life without the jack and with everything else in the new iPhones.

Headphone jackless

Mark me down as someone who will miss the headphone jack.

Despite living in a mostly wearable, wireless world, I don't like Bluetooth headphones. And I also hate dongles. I'm learning to deal with both now. Apple's new AirPods make a case for how more-advanced Bluetooth mini-earphones could be fun to carry around. But to me, nothing beats a cheap pair of plug-and-play earphones for lazy convenience.

Other phones that offer what the iPhone 7 offers don't seem to need to get rid of a headphone jacks. But maybe the trend will grow. The adoption of USB-C, a versatile jack, may lead to headphone jacks going away in Android phones, too. Maybe we should just get ready for the change.






Posted 9/14/16
Huh... Weird.

That's about all I have to say after spending the time reading this entire post.
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Posted 9/14/16 , edited 9/15/16
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Posted 9/14/16 , edited 9/14/16
I have a Samsung Galaxy Note 4 and it does get hot at times, however it's never gotten that hot. The reason above is why you should let your phone rest if you're feeling it start to get hot, and never leave it on the charger once it's finished charging. If you charge it while you sleep, check it if you get up for any reason and take it off the charger if it's charged. Oh, and make sure that you're not charging it on a surface that can conduct heat or retain heat easily, such as a fabric surface or on your blankets or pillows. The heat will build up underneath your phone.

I know that this case with the Samsung Galaxy Note 7 overheating and exploding isn't usual, and things like that don't usually happen in such a broad range of one device, but if you follow those guidelines, you shouldn't have to worry about your phone overheating and/or exploding if you have a different model phone, which is the most likely cause of other phones overheating and/or exploding.

Ugh, the iPhone.... Never liked it and never will. I'm an Android person.
Posted 9/14/16


I agree with 9 here
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Posted 9/14/16


Megumin is pleased
Posted 9/14/16
I was amazed to hear that Samsungs phones were blowing up, this is no laughing matter and this was very irresponsible of the company to let loose out into the wild and the end result was not pretty.

Apparently in Samsungs side they created a Dumbphone with the ability to self destruct... im staying away from Samsung products after this catastrophe happened i dont trust them.
Posted 9/14/16
People should actually pick out good phones instead of getting what all their friends have.
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Posted 9/14/16
they seem to be handling this a little better than before... https://www.youtube.com/watch?v=2QHd-_qncEU
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Posted 9/14/16
and i thought the iPhone 7 had dumb modifications
RIP smartphone users
Nikuma 
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Posted 9/15/16
Glad I'm an Apple guy.

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Posted 9/15/16

Nikuma wrote:

Glad I'm an Apple guy.



"...unlucky iPhone owners allegedly suffered nasty burns from exploding devices in 2015 and 2016."

The problem is ignorant misuse of lithium ion technology. Throughout the tech industry, there has been a ten-year trend of removing the expensive people who don't contribute directly to the bottom line.

This means we've been cutting an awful lot of QA and R&D people... who are precisely the ones that are there to say "we are approaching a dangerous margin here" before shit like this happens.

Steve Jobs understood this and was never afraid to invest heavily in these preventive tasks. That's one of the reasons Apple products are more expensive, and it's THE reason Apple historically releases products nobody else can release.

Over time, Apple will lose that edge, and become simply another tech company which is overpriced for no good reason. Don't confuse the values of a person with the values of a company; they aren't the same.
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Posted 9/15/16
....Shit like this is why I only own a flip phone.
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Rabbit Horse
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Posted 9/15/16
apparently Samsung lost 22 billion in market value in just 2 days because of the battery issue + miscommunication with government agencies. perhaps coincidentally, they're now getting rid of their printer business
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