Samsung galaxy note 7 fire

• According to a person familiar with discussions between government agencies and Samsung, the SDI batteries from the first batch of Note 7s were indeed too large for the handset.

The regulator also pointed to the battery design within the phone’s rounded edges.

• Dialog DA9155 charging chip, alongside the familiar MAXIM power IC. Importantly, this DA9155 does not appear to be found inside the Galaxy S7 or S7 edge. This chip is a slave charger that extends the current capabilities of a master power IC for increased charging currents up to an additional 2500mA. It’s controlled by the application processor (AP) and, interestingly, kicks in during the high-power constant current charging stage.

A combination of causes

• “[Samsung] was too quick to blame the batteries; I think there was nothing wrong with them or that they were not the main problem,” – Park Chul-wan, former director of the Center for Advanced Batteries at the Korea Electronics Technology Institute

AndroidAuthority


Samsung could suffer "a considerable loss of consumer faith," said Greg Roh at HMC Investment Securities.
"If it's once, it could be taken as a mistake. But for Samsung, the same thing happened twice with the same model," he said.
"The reason consumers prefer brands like Samsung and Apple is because of product reliability. So in this case, brand damage is inevitable and it will be costly for Samsung to turn that around again."

10 Oct 2016:
Samsung officially announced that it had "[asked] all carrier and retail partners globally to stop sales and exchanges" of the Galaxy Note 7, and urged all owners to power them off and "take advantage of the remedies available, including a refund at their place of purchase".

13 Oct 2016:
Samsung has announced an expanded voluntary recall on all original and replacement Galaxy Note7 devices sold or exchanged in the United States in cooperation with the U.S. Consumer Product Safety Commission and in partnership with carriers and retailers. Since the affected devices can overheat and pose a safety risk, we are asking consumers with a Galaxy Note7 to power it down and contact the carrier or retail outlet where they purchased their device.
- Samsung

so far the rumor is hinting  that the battery has not done standard thorough testing before leaving the factory, eg, in formation process, and in charging test process.