This Text Message is Capable of Crashing Your iPhone

iOS has always been known for its security and great UX. However, something as simple as a common text message can actually change that. An exploit that can permanently render your iMessage app useless is out in the wild, and this was demonstrated by a Youtuber. This exploit crashes iOS and a simple reboot won’t even fix it.
The message contains a large contacts file that is attached via iCloud Drive. Upon receiving the message, the message app freezes and the keyboard refuses to respond. The only way to exit is through the app switcher. Re-launching the message app still breaks it as only a white screen is shown, taking the user back to the home screen after some seconds.
This malicious message permanently breaks the iMessage app and a user will be unable to read or reply any more message.
It appears the iMessage app crashes because it’s unable to decipher the contacts file. Apple will likely release a fix as this may become serious if widespread.
You are advised not to check out suspicious attachments and links if you own an iPhone. A full restore without backup may be the only way out.