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Samsung's final word on the Note 7 disaster

Samsung's final word on the Note 7 disaster

The head of Samsung's mobile communications division, Koh Dong-jin, took to the stage to tell the world what they had discovered in their investigation into the Galaxy Note 7 problems. The official cause has - finally - been disclosed.

The investigation was carried out internally, with external experts from UL, Exponent and TUV Rheinland AG who confirmed the results at the press conference. Samsung used more than 200,000 devices in their thorough testing to look closely at various features, like water resistance, charging with the USB Type-C, fast charging, wireless charging, the software and even the iris scanner. Once no problems were found during the initial internal testing, those third parties were brought in to examine the production process. In the end, the cause turned out to be the battery.

Despite having two separate suppliers for the Note 7 batteries for the original units and replacements, both types had issues which caused the devices to explode or catch fire. Batteries from the first company malfunctioned because of their design. Abnormalities with the electrodes in upper-right corner of these batteries caused a short circuit. Batteries from the second company malfunctioned because of bumps which formed during welding which damaged the protective layer between the positive and negative electrodes. For a closer look at the batteries, see Samsung's infographic below.

Galaxy Note7 What We Discovered Infographic Main 1
The cause of the S7 issues was the battery after all. / © SAMSUNG

Now that the true cause of the issue has come to light, we can consider the case closed. Samsung can put this chapter behind, and focus on turning a fresh page because, as they announced during the press conference, the Galaxy S8 is almost here.

Did you also expect that the cause of the problems would be the battery? Are you excited for Samsung's next flagship? Let us know in the comments below.

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6 comments

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  • Well... This wasn't anything new. ¯\_(ツ)_/¯


  • Elfyn Jan 24, 2017 Link to comment

    REMOVEABLE/REPLACEABLE BATTERIES!


  • A fall into the pit, a gain in your wit. Hope it won't happen again on other phones. All the phone manufacturers should learn something from the Note 7 disaster.


  • And being sealed tight, means heat can't escape. Sometimes my Note 4 gets hot when working hard, so I just whip of the back and let it cool down. Easy..


  • Mark
    • Admin
    Jan 24, 2017 Link to comment

    In addition- Making the battery oversized and squeezing it into place under an insulating glass back only helped compound the problem. Samsung's design is part of the problem. Rushing a product without proper testing just trying to beat the competition is carless. The person(s) who made the decisions should be held responsible for their action. In my opinion.


    • Absolutely agree Mark. If I were to do something that put my co-workers in danger I wouldn't probably have a job or at the very least not have any responsibility making decisions.

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