Samsung Note 7 was afflicted by two separate issues: report
After multiple delays, Samsung is due to report their findings of their completed investigation into the fires that plagued the release of their flagship Note 7 at an event in Korea on Monday. The Note 7 debacle cost Samsung over US$3 billion in Q4 2017 and caused untold damage to their reputation. Publicaly revealing the findings of their investigation may help the Korean tech giant to recoup somewhat.
According to some Wall Street Journal reporters who have caught an early look at the notes for the presentation, the Galaxy Note 7 was afflicted with not one but two problems with its batteries. Batteries from one supplier apparently didn't fit into the phone properly, and this resulted in pressure and overheating. The second problem was manufacturing flaws from one supplier, which may be the problem Samsung thought it had caught when it announced the first (ill-fated) recall.
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