Samsung Three months after its largest-ever recall, Samsung has finally completed its investigation of the Galaxy Note 7 fiasco. The high-profile flagship phone was recalled (twice) and cancelled after reports of explosions and fires, and now Samsung thinks it has finally nailed down the issue. Samsung's verdict: two separate battery construction issues were to blame. Samsung Electronics used two separate suppliers for the Galaxy Note 7—Samsung SDI, a sister company in Samsung Group, and Amperex Technology Ltd (ATL)—and it turns out both manufacturers had their own issues.