For 6s, the shutdown probably has to do with the faulty battery. But maybe there was a batch bad for 6+ as well. https://www.apple.com/support/iphone6s-unexpec

For 6s, the shutdown probably has to do with the faulty battery. But maybe there was a batch bad for 6+ as well. https://www.apple.com/support/iphone6s-unexpectedshutdown/ https://www.apple.com/support/iphone6s-unexpectedshutdown/ Not sure if they checked when the battery was manufactured. But now given $29 I guess no longer relevant...