Samsung announces final conclusions regarding the Galaxy Note 7 battery issues

Samsung today finally announced the definitive conclusions of its investigation into the battery failures that led to the double-recall of the Galaxy Note 7 smartphone. In order to reach a final conclusion, Samsung conducted thorough tests itself, in addition to commissioning three independent industry groups to look at the issue.

Samsung says that, for the past several months, it investigated all aspects of the Galaxy Note 7, including hardware, software, assembly processes, and so on. About 700 Samsung engineers tested no less than 200,000 Note 7 devices and 30,000 batteries, being able to replicate the incidents that consumers reported last year - overheating batteries and "thermal failures."
According to Samsung, the Galaxy Note 7 itself (including its design, hardware, and software) did not contribute to the failure of batteries. Thus, this was a battery-only issue.

The Note 7 was released with batteries manufactured by either Samsung SDI (Manufacturer A in the slideshow below), or a Hong Kong based company called Amperex Technology (Manufacturer B). As recently assumed, Samsung found that both types of batteries were prone to failure.

We're not going to get too technical about this, but both Note 7 batteries could overheat and catch fire due to a combination of manufacturing and design flaws. In particular, Samsung SDI-made batteries could have failed and short-circuited due to deformations at the upper corners, and thin internal separators, while the problem with Amperex-made batteries lied in missing (or misalignment of) insulation tape and (again) thin internal separators. If you visit the first source link below, you'll find three PDFs at the end of Samsung's press release - you can check out technical details there.

Samsung re-confirmed that, to date, 96% of "about 3 million" Galaxy Note 7 units sold and activated around the world have been recalled

In order to enhance the security of its future products, Samsung has taken proper measures, including protocols like "multi-layer safety measures" and an "8-Point Battery Safety Check." You can find out more about that in the video embedded below. Samsung also said that it "formed a Battery Advisory Group of external advisers, academic and research experts to ensure it maintains a clear and objective perspective on battery safety and innovation." Well, we do hope that all smartphones, made by Samsung or any other company, will be safe to use from now on.

Related phones

Galaxy Note 7
  • Display 5.7" 1440 x 2560 pixels
  • Camera 12 MP / 5 MP front
  • Processor Qualcomm Snapdragon 820, Quad-core, 2150 MHz
  • Storage 64 GB + microSDXC
  • Battery 3500 mAh



2. Nathan_ingx

Posts: 4769; Member since: Mar 07, 2012

Hate to tell you this Samsung, but battery failure is also a phone failure.

30. Klinton

Posts: 1409; Member since: Oct 24, 2016

Hate to tell you this, but you are naive. Agree that Samsung's explanation is funny, though. See 27 I believe Samsung developed something that will turn the phone off, if somebody try to make such scams again.

43. Nathan_ingx

Posts: 4769; Member since: Mar 07, 2012

You think I'm naive because you think it's a conspiracy... I think you're naive because of that too.

3. hemedans

Posts: 755; Member since: Jun 01, 2013

if its battery failure then why returned units were still catching fire?

4. cmdacos

Posts: 4200; Member since: Nov 01, 2016

Reading is hard

76. Klinton

Posts: 1409; Member since: Oct 24, 2016

Reading media never help me much. Could you explain to me with your words this Why after the ban no Note7 exploded?

10. dimas

Posts: 3363; Member since: Jul 22, 2014

Read from the beginning to end and you'll have your answer.

5. Mreveryphone

Posts: 1821; Member since: Apr 22, 2014

At least Samsung gave us some kind of explanation... Other companies don't even bother to mention why some of their devices malfunctioned.

16. maple_mak

Posts: 953; Member since: Dec 18, 2013

Even Steve Jobs held the press conference about #AntennaGate on iPhone 4 and apologise to all users. And Tim Cook doesn't hold any press conference about battery issue on iPhone 6S and hiding inside the company like a coward (at least have provided battery replacement). Both Apple CEO have lot difference, and Steve Jobs and Samsung CEO has done a good job with commit the incident to mass media.

8. NarutoKage14

Posts: 1324; Member since: Aug 31, 2016

Samsung live streamed live streamed the event with a complete breakdown of their results. And he's a 2 minute condensed ad version of the whole thing.

13. rj.gabrillo

Posts: 11; Member since: Jun 13, 2013

I just missed my Note 7. from Philippines.

18. roobs

Posts: 96; Member since: Mar 18, 2013

my question is if install another battery from another manufacturer, will/can the note 7 can still be called flawed?

19. NarutoKage14

Posts: 1324; Member since: Aug 31, 2016

Essentially all they need to do is install a physically slightly smaller battery as far as I know. They still wouldn't be able to resell it it many countries though.

21. Arch_Fiend

Posts: 3951; Member since: Oct 03, 2015

I don't remember who it was but I told you that the problem would't have anything to with the design and thickness of the Note 7.

34. mohsin845

Posts: 42; Member since: Apr 05, 2014

Great Job SAMSUNG.

36. mahima

Posts: 729; Member since: Nov 20, 2014

Release the same with new(and smaller) batyery at half the win!!

37. Tariq123

Posts: 186; Member since: May 15, 2016

I feel like they didn't find the issue, this is just an excuse.. I know phones will be safer but I don't believe the real issue is discovered. They would have a replacement program not discontinuing it if they know the problem. But I'm just guessing. Can't ever know for sure

46. ibend

Posts: 6747; Member since: Sep 30, 2014

the problem is just that? what about re-releasing it (with new battery design obviously) together with S8? with major price cut

63. legiloca

Posts: 1676; Member since: Nov 11, 2014

If they solved the battery failure very quickly, they can re-release Note7 just in time for the holidays, such a waste of innovation really :(


Posts: 8; Member since: Jan 16, 2017

Just a straight out lie

67. Basharhd99

Posts: 102; Member since: Jul 05, 2012

Why do I feel sad seeing all the note 7s in the video :(

68. galaxy-gear

Posts: 119; Member since: Sep 30, 2016

Samsung also launched a strict program to test battery for any phone before salling

79. TechieXP1969

Posts: 14967; Member since: Sep 25, 2013

I'm curious as to how, the way Samsung tests their phones charging, as seen in the phone, how none of them ever caught fire. So if they didn't through testing, then why did a few catch fire afterwards? What sucks about a phone burning, is the evidence gets destroyed. I want to know if end users used the wrong charging cable. I asked because, even though there is a standard for USB Type C, each OEM is not using it exactly the same. Could end users have gona an bought cables that were not of the right standard which caused the phone to catch fire? For me, I had been using my Note 5's cable and charger, because the charger itself is the same. I simply used the microSD~Type C adapter that was in the box. I have not even used mu included USB Type C cable yet. I've had no issues. The device gets no warmer charging then normal. I've had 3 Note 7's and none of them have shown any signs of having an issue. A few times it has gotten fairly hot after gaming for more than an hour straight. I don't lay the device on cloth surfaces while charging, which would make the device get hotter. So I'm curious, since no phone caught fire during Samsung testing, which we know is present extensive, then why did they when users got them?

83. McLTE

Posts: 922; Member since: Oct 18, 2011

Now.. please make the Note 7 once again available with NEW batteries.. I'll take one!

90. Tabby_Tiger

Posts: 305; Member since: Jan 23, 2017

If this is true why not re-release the Note 7 with a non-faulty battery in a limited batch? Perhaps online order only to bypass retailer? I'm sure the demand is high enough to get rid of the remaining inventory. Think of the landfill all those Note 7s and accessories this would avoid!

93. jeroome86

Posts: 2314; Member since: Apr 12, 2012

So this was a different designed battery then the S7 ?

102. King_bilo

Posts: 115; Member since: May 20, 2015

good question

97. nate358

Posts: 63; Member since: Dec 24, 2013

Hopefully all battery manufacturers take note!

101. King_bilo

Posts: 115; Member since: May 20, 2015

I dunno about this.. The probability that two separate battery manufacturers should have the same exact issue of exploding batteries sounds rather dubious. on the other hand, if it werent true, the battery companies wouldnt lie down and take it.. unless they are in Sammys pocket...But even at that, there would be a whistleblower somewhere.

* Some comments have been hidden, because they don't meet the discussions rules.

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