The former director of the Center for Advanced Batteries at the Korea Electronics Technology Institute, has said “I think there was nothing wrong with them (batteries) or that they were not the main problem.”

Although Samsung has stopped the manufacture of its Galaxy Note 7, the more important question of how and why the phones caught fire remains still a mystery to Samsung engineers.

Initially when the first reports of exploding batteries came through, Samsung had stated that “we conducted a thorough investigation and found a battery cell issue.” The issue should have logically ended there.

However, it rose again, and this time the phone caught fire. To bring the matter to a close, Samsung had announced a permanent end to the manufacturing of the phone. There was no word on the problem though.

The NY Times has reported that despite assigning “hundreds” of its employees to replicate the spontaneous blazing hot phones that customers have been experiencing, Samsung is yet to place a finger on the root of the problem.

Check out this video of a woman’s on a Galaxy Note 7 beginning to smoke. Samsung engineers are finding it hard to replicate this condition.

The first recall focused on phones whose batteries had been built by Samsung’s SDI subsidiary. The solution was to limit the charging level. A software update appears to have fixed the problem. However, the issue remained and got even worse: the phone caught fire.

Some speculations have centered on the phone’s quick charging capability through its USB-C cables, however there is nothing definitive as to what exactly went wrong.

During an interview with Park Chul-wan, a former director of the Center for Advanced Batteries at the Korea Electronics Technology Institute, he has stated, “I think there was nothing wrong with them (batteries) or that they were not the main problem.”

The news is likely to be bittersweet for TDK. Samsung had contracted the manufacturing of the replacement batteries to TDK and the decision to scrap the Galaxy Note 7 entirely, could be put on hold given that its battery was not to blame.

For now Samsung has stuck to its stated position of cancelling the manufacturing of the Galaxy Note 7.

More updates on this will follow if there is any further development regarding this story.