Samsung Jan. 22 announced the results of an exhaustive investigation of defects in its rechargeable batteries that caused its big-screen Galaxy Note 7 smartphones to catch fire and explode. Samsung President DJ Koh confirmed that manufacturing process defects caused short circuits that caused the batteries to overheat, burn and even burst. Samsung noted no other components in the smartphone contributed to the battery problem. Koh apologized to customers for the problems and promised a closer focus on safety and quality assurance in the future.
