Didn't see this posted here so I thought I'd post. This was a safe phone that was an exchange. He left it on the charger overnight and woke up to a fire and explosion.
First off leaving on a charger overnight can increase the risk.
Secondly the charger cord was showing the wires and the charger could have been the cause.
http://pocketnow.com/2016/09/27/new-chinese-galaxy-note-7-explodes
http://pocketnow.com/wp-content/uploads/2016/09/galaxy-note-7-china-fire-1.jpeg
First off leaving on a charger overnight can increase the risk.
Secondly the charger cord was showing the wires and the charger could have been the cause.
http://pocketnow.com/2016/09/27/new-chinese-galaxy-note-7-explodes
http://pocketnow.com/wp-content/uploads/2016/09/galaxy-note-7-china-fire-1.jpeg