While Apple released a "solution" to the error (bugs) that causes the iOS device to crash when receiving a specially formatted unicode message, there are too many who still use the same bug to cause device problems.
So they use the iOS difficulty to read unicode characters to crack Apple's systems in different ways. 
The vulnerability lies in how the Apple CoreText library edits Unicode characters in text messages.
Once the users have learned the error, the jokes that are causing the crash of Apple's mobile devices began.
Below we will describe some possibilities of exploiting the bug which, as you will see in the following video, are freely available on the internetnetwork.
10 Ways to Crack iPhones.
In addition to simply sending a message (via multiple streets) to the targeted device, which will stop working when the alert is displayed, there are some other ways to cause problems that will not be displayed with alerts on the device.
One method is to change the name of the Wi-Fi network by adding another with Unicode characters. The result: iDevices users will no longer be able to access the Wi-Fi settings, because the application will crash when it "reads" the name of the wireless connection.
Of course, once the device comes out of the wireless range, access to the settings is retrieved.
Also, another nasty prank is putting the Unicode text into the subject line of an e-mail and sending it to iPhone users. The result: the device crashes when the notification appears and the Mail application can no longer start.
The video shows different examples and one shows how the Maps app is cracked. Prank is easily accomplished by creating an Apple Maps URL containing the known characters.
When someone goes to visit the link the text they contain causes the crash of the Maps application.
At number seven on the prank list is iOS Safari. By creating a websiteσελίδαs with Unicode characters Safari will crash because it cannot read it.
But watch the video with all the tricks using the same bug:
https://www.youtube.com/watch?v=tBOzI_jfGb8
