Engineers have finally worked out why the Samsung Galaxy Note 7 kept exploding

It's been almost two months since Samsung decided to scrap its Galaxy Note 7 smartphone , after a series of incidents involving the smartphones catching fire and exploding.
Initially, Samsung blamed the problem on faulty batteries supplied by its subsidiary, Samsung SDI, according to documents leaked to South Korea’s SBS TV.
The plates inside the battery were supposedly too close to each other near its rounded corners, making it vulnerable to a short circuit, and the battery also had defects in its insulating tape and the coating of its negative electrode.
Samsung recalled the 2.5 million devices containing SDI batteries and swapped them for Note 7s containing batteries from a different supplier, ATL.
But after replacement phones started suffering the same issue , it was suggested further defects could exist within the Note 7.
Now a teardown of the Note 7 by engineering software developer Instrumental appears to have uncovered the real root of the problem.
The researchers say that the exploding issues were probably the result of Samsung being too ambitious with the design of the Note 7, and not building adequate safety precautions into the smartphone.
It is also possible that the company;s engineers did not have enough time to test just how effective those safeguards would actually be.
"Battery testing takes a notoriously long time (as long as a year for certain tests), and thousands of batteries need to be tested to get significant results," said Shedletsky.
"It's possible that Samsung's innovative battery manufacturing process was changing throughout development, and that the newest versions of the batteries weren't tested with the same rigor as the first samples."