Send the Telugu Character „జ్ఞా“ 😀
And the phone crashes
The bug itself involves sending an Indian language (Telugu) character to devices, and Apple’s iOS Springboard will crash once the message has been received. Messages will no longer open as the app is trying and failing to load the character, and it appears that the only way to regain access to your iMessages is to have another friend send you a message and try to delete the thread that contained the bad character.
https://www.theverge.com/2018/2/15/17015654/apple-iphone-crash-ios-11-bug-imessage
