Samsung Electronics said it found out that flaws associated with the batteries are what caused many of its Galaxy Note 7 smartphones to explode. 
The tech giant said in a news conference in Seoul on Monday that it reached the conclusion after conducting tests on the model, whose production has been permanently stopped as of last October. 
The firm said the tests on 200-thousand Note 7s and 30-thousand batteries found that two types of batteries caused the phones to ignite, each for different reasons. Batteries produced by Samsung SDI and China’s ATL were used in the Note 7s. 
The company said their finding also coincides with assessments made by independent investigations. Three foreign safety certification agencies assessed that the Note 7 caught fire due to battery defects. The agencies found no problem in the body of the device despite some industry sources pointing to the design of the phone or its software as possible reasons for the phones catching fire. 
The head of Samsung's mobile business division, Koh Dong-jin, said he strongly feels responsible for failing to thoroughly verify the batteries used in the Galaxy Note 7, saying it is not fair to pin the blame solely on partner companies. 
Vowing to place top priority on safety when making smartphones, the firm said it will introduce an eight-step battery testing procedure that includes safety and durability checks. South Korean (KBS) World Radio News reported.

Source: QNA