iPhone´s and Apple Watches are vulnerable to get crashed when the phone receives a special crafted string of characters via text message, snapchat, and twitter.
Here’s a three-step process to combat the issue:
You can do this simple workaround in the meantime before Apple patches the bug in order to open your 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. If the issue continues, tap and hold the malicious message, tap More, and delete the message from the thread.
Following these simple steps would let you successfully access your Messages again. However, this procedure will provide only a temporary fix for the iPhone crash text bug.