The Samsung Galaxy Note 7 incidents last year were caused by the phones’ batteries – according to Samsung’s president of mobile communications business Koh Dong-jin.

Speaking at a press conference in Seoul, South Korea, Koh was joined by speakers from independent industry groups to present findings and unveil measures Samsung plans to take. The speakers included Sajeev Jesudas, president of the consumer business unit at UL; Kevin White PhD, principal scientist at Exponenet; and Holger Kunz, executive VP of products at TUV Rheinland AG.

“For the last several months, together with independent industry expert organisations, we conducted thorough investigation to find cause to the Galaxy Note 7 incidents,” Koh said. “Today, more than ever, we are committed to earning the trust of our customers through innovation that redefines what is possible in safety, and as a gateway to unlimited possibilities and incredible new experiences.”

The investigation into Samsung’s hardware, software, and related processes, required around 700 researchers and engineers to test more than 200,000 devices and over 30,000 batteries to come to the conclusion that batteries were the cause for the fire hazard.

A company spokesperson said: “We have taken several corrective actions to ensure this never happens again, including the implementation of a multi-layer safety measures protocol at the product planning stage, and an eight-Point Battery Safety Check.

“We look forward to moving ahead with a renewed commitment to safety. The lessons of the past several months are now deeply reflected in our processes and in our culture.”

In addition to the battery revelation, Koh also announced that the Galaxy S8 would not be unveiled at the Mobile World Congress trade show in Barcelona – where Galaxy S devices tend to be unveiled – this year. However, did not comment on when the handset would be launched.