One text message can crash anyone's iPhone. Here's how it works the text message contains specific Latin and Arabic characters. Once it's sent, the receiving iPhone crashes. It will come back on by itself in about 15 seconds, but users say it disables iMessage until you delete the conversation. Experts say the glitch could be caused by an error in how iPhones display incoming messages. The glitch was discovered by users of the forum website Reddit. Apple says it is working on a fix.