In the past, there have been many mysterious codes on the iPhone. This mysterious code is actually a text string that will directly cause the iPhone to crash.
At present, the new mysterious code composed of the Italian flag emoji along with characters in the Sindhi language is circulating on social networking sites. When the user receives this text string, the system crashes. You can only forcefully shut down the iPhone and restart the device.
According to the test, the mysterious code currently circulating affects iPhone, iPad, Apple Watch, and even Mac, and the spread of these strings is also expanding.
Although most mysterious codes are spread through Apple iMessage, sometimes such mysterious codes can also be triggered by other communication software.
At present, Apple confirmed the existence of this problem and fixed it in the iOS 13.4.5 second beta.