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Samsung revealed why the Galaxy Note7 was such a disaster after months of investigations

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Late Sunday, Samsung released the results of a months-long investigation into why its Galaxy Note7 phone was prone to catch fire.

The company said design flaws and manufacturing mistakes were the reason, not its hardware or software. On the positive side, Samsung said its investigation would help the entire smartphone industry avoid similar battery problems. 

It also announced a delay of its next flagship phone, the Galaxy S8, which was set to release in February.

WATCH |  Samsung released this video summarizing its findings. The global recall cost the company at least $5.3 billion, USA Today reports.

Samsung said the battery fires resulted from manufacturing flaws from two different battery suppliers. Damaged corners of one battery bent electrodes, and since the battery did not have enough space to fit the electrodes safely, they could touch and spark a fire.

Another battery design had welding defects and a lack of protective tape. 

Samsung said it gave its battery suppliers "targets" to reach but not specific design requirements, which may have contributed to the problems.

FILE - In this July 28, 2016, file photo, a color blending feature of the Galaxy Note 7 is demonstrated in New York. (AP Photo/Richard Drew, File)
FILE - In this July 28, 2016, file photo, a color blending feature of the Galaxy Note 7 is demonstrated in New York. (AP Photo/Richard Drew, File)

Samsung said it introduced a new eight-point battery safety check with more intense durability tests. The safety measures will be in "every element of the company's devices," including initial designs and materials.

Samsung Galaxy Note7 2.jpg
FILE - In this Thursday, Oct. 13, 2016, file photo, returned boxes of Samsung Electronics' Galaxy Note 7 smartphones are placed at a shop of South Korean mobile carrier in Seoul, South Korea. Hundreds of South Korean Galaxy Note 7 smartphone owners filed a lawsuit against Samsung Electronics on Monday, Oct. 24, 2016, over its handling of the fire-prone device in the first series of legal actions facing the South Korean tech giant at home. (AP Photo/Lee Jin-man, File)

Samsung also said it had recalled about 3.06 million Note7s, 96 percent of all those sold. Anyone still using the phone is urged to return it. Samsung has reached deals with carriers to render the phones useless

The Associated Press contributed to this report.

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