Samsung has said that faulty batteries were the cause of the Galaxy Note 7 explosions that led to a recall of millions of smartphones, confirming what most of us had already suspected.

Last year saw a slew of customers’ new phones explode and Samsung has now confirmed that this was indeed the reason in a press conference following internal and independent investigations.

The company told reporters that the casing was too small in the original lithium-iron battery, causing it to short-circuit and burst into flames. A replacement had a different problem, but also ignited (via The Guardian).

“Our investigation examined every aspect of the Galaxy Note7 including hardware and software, and related processes, such as assembly, quality assurance testing, and logistics,” they further explained in a statement.

The company said that around 700 researchers tested more than 200,000 devices and 30,000 batteries in the process.

“We are taking responsibility for our failure to ultimately identify and verify the issues arising out of battery design and manufacturing process prior to the launch of the Note7,” they continued.

“We have taken several corrective actions to ensure this never happens again, including the implementation of a multi-layer safety measures protocol at the product planning stage, and an 8-Point Battery Safety Check.”

Samsung was forced to recall over 2.5 million Note 7s back in September last year, following reports of explosions. Replacement phones were also found to have the same problem.

The Note 7 was eventually scrapped in October, leading to expected lost profits of around $5.3 billion.

The tech firm said that the crisis has taught them lessons that are “deeply reflected in our processes and in our culture”, and that they had a “renewed commitment to safety”.

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