This is clearly a hoax
Seeing as all Apple products are perfect and are worth every penny.
Apple has published a temporary workaround for iPhones blighted by incoming text messages that cause them to crash and restart – and it involves asking Siri for help. A specially crafted sequence of unicode triggers a fatal bug in a core component of iOS and OS X. If the data is sent in a text message, it will crash an iThing …
"it will crash an iThing when it is displayed as a notification"
Anecdotally it would appear, on the 5C at least, to crash the phone when opening the messaging app too, rather than just viewing the notification. Then again, the phone belongs to the girlfriend of my nephew and, considering both are in their late teens, neither of them are that technologically minded so when they say it also crashes by going directly into the messaging app I'm not entirely convinced they're directly going into the messaging app.
Anyway, a factory reset solved the problem (until the next numpty sends the message again!)