Samsung has finally revealed a reason for the "Galaxy Note 7" overheating. The company says bad battery design is what led to the phone overheating and exploding, which eventually led to millions of units being recalled worldwide.

A press conference was held on Monday where Samsung officials said tests were conducted on tens of thousands of units and batteries which ruled out any problems with the phone's hardware and software. However, it added that internal and independent investigations later found that the batteries were the primary reason for the Note 7's problems.

The original battery's casing was too small which caused it to short circuit and burst into flames. Samsung would later replace it with another battery that also had its own defect, and it resulted in the same catastrophic ending for the Note 7. Samsung's head of mobile Koh Dong-jin told reporters in Seoul that the company was sorry for all of the discomfort and inconvenience caused to their customers.

The company assured that no fire risk would be experienced by future devices, including its upcoming S8 smartphone. Samsung issued a statement saying they were taking full responsibility for their "failure to ultimately identify and verify the issue out of battery design manufacturing." The South Korean tech conglomerate also stated that they will be taking several corrective actions to ensure that any similar incidents will never happen again.

Last September Samsung was forced to recall more than 2.5 million "Galaxy Note 7s" after reports of the phones overheating and exploding, according to the Guardian. The problem only got worse after replacement phones equipped with batteries sourced from a different supplier experienced the same problems.

Samsung ultimately made the decision to cease production of the "Galaxy Note 7" in October. This move is expected to cost the company around $5.3 billion in lost profits. Reuters reports that Samsung could be delaying production of their flagship Galaxy S smartphone as it attempts to improve product safety.