For some user owning iPhone 6S and 6S Plus who recently upgraded to iOS 10 or still remain in iOS 9, you might encounter brain draining and auto-shutdown. This is occurs when you battery is around 80% and you smartphone shut off immediately or a significant battery drain has been noticed (more than 1% battery lost in 1 minute).
Apple has yet to respond to this bug encounter but we could expect bug fixes to be roll out soon this problem continues to prevail in the future.
Source : 驱动之家
