Certain strings received on an iPhone can cause it to reboot due to a bug in Apples iOS Messages app. Apple have acknowledged the bug, saying “We are aware of an iMessage issue caused by a specific series of Unicode characters and we will make a fix available in a software update.”
Reddit users discovered the bug on iPhone, apparently crashing phones running the latest version of iOS (8.3) and older versions of iOS as well. According to Reddit though, the receiving phone is not turned off if the recipient is reading the message at the time. The string is a mix of Latin and Arabic characters which trips up the notification banner and causes the phone to crash.
A bug in Apple ‘s iOS Messages app can cause an iPhone to reboot after receiving a specific string of text in a message. Apple acknowledged the bug in an email to the Journal, saying: “We are aware of an iMessage issue caused by a specific series of Unicode characters and we will make a fix available in a software update.”
While the bug is real and apple have admitted as much, it is not that straight forward to pull off and can take various attempts to get the phone to reboot and once it does it boots as normal.