A couple of weeks ago, iPhone owners the world over started receiving odd text messages from their mischievous friends — texts which promptly shut down their devices. This bizarre bug had something to do with how banner notifications process Unicode text, which is what appears in the odd string of text.
Apple provided a workaround shortly after the bug was reported, but today we found out that the official fix has been included in iOS 8.4 beta 4.
Read more here:: Boy Genius Report