It has been more than three months since Samsung launched a comprehensive recall of Galaxy Note7. Recently, the largest mobile phone manufacturer in South Korea held a press conference in Seoul, officially announcing the real cause of the explosion of Note7.

Samsung has used more than 700 R&D personnel, 200000 new Note7 and 30000 batteries to conduct simulated user tests in three major factories around the world during the past survey, and also invited three internationally renowned institutions to join the survey.

According to the investigation results, both the first batch of products and the so-called safety version have defects, which directly led to the fire of the battery. The reasons for the first batch of batteries that caught fire are different from those for the subsequent explosion accident. The former is due to the extrusion of the negative pole of the battery, resulting in a short circuit, and the latter is due to the burrs of ultrasonic welding, The battery was broken causing a short circuit.

After so long, Samsung has finally unveiled the explosion of Note7, and the person in charge also said that security will be the priority in the future.

Details announced by Samsung:

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