A couple days after a new iOS bug was discovered, allowing a select string of characters sent in an iMessage or text to reset iPhones and crash the Messages app, Apple has created a new support document to address the problem. The Cupertino company acknowledges the problem and says that it’s working on a fix, offering temporary solutions in the mean time.
Apple is aware of an iMessage issue caused by a specific series of unicode characters and we will make a fix available in a software update. Until the update is available, you can use these steps to re-open the Messages app.
1. Ask Siri to “read unread messages.”
2. Use Siri to reply to the malicious message. After you reply, you’ll be able to open Messages again
3. In Messages, swipe left to delete the entire thread. Or tap and hold the malicious message, tap More, and delete the message from the thread.
In addition to Apple’s suggestions, there are other possible fixes that have worked for MacRumors in other scenarios. For instance, if Messages was opened in conversation list view you can fix the issue by having someone send you a message or sending yourself a message via Siri or through the Share sheet in any app.