It has been about three months since the explosion of Galaxy Note 7, but Samsung has not found the exact cause of the battery explosion, and finally had to make a bleak announcement of production suspension and global recall. Samsung Electronics has promised to release the investigation results of the explosion before the end of the year. Recently, Instrumental, the third party contractor that focuses on helping hardware companies find and repair problems in production process, parts quality, assembly process and design, released an investigation report on Note 7 battery explosion, indicating that the design of the mobile phone itself was too radical.

Samsung has increased the thickness of the battery as much as possible in the design of Note7 to maximize the battery capacity of the mobile phone. The battery is located in the protective cover processed by CNC to ensure that the battery will not be poked and pressed by other internal components, but Samsung's design is too compact and thin, so that frequently pressing the screen in daily use will cause excessive pressure on the battery and cause explosion. At present, Samsung has not confirmed this statement officially.

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