How To Fix Black Dot Unicode Bug That Crashes iMessage On iPhone

Sometime ago there was a Unicode bug that causes WhatsApp on Android and iMessage on iOS to crash. This particular Unicode strings which cannot be rendered properly on the device leads to system crashing. Benjamin Mayo who wrote on 9to5Ma said the strings contain thousands of hidden invisible Unicode characters.

Black Dot Unicode Bug That Crashes iMessage

According to him;
The secret is that the strings contain thousands of hidden invisible Unicode characters, which churns through CPU cycles as the system attempts to process them. If this specially crafted text is sent through Messages, it will result in repeated crashes when the recipient tries to read it.
 How You Can Fix The Black Dot Unicode Bug Causing Crash On iMessage

The bug currently affects device running on both iOS 11.3 and iOS 11.4 beta update. To fix the issue, the process involves you deleting the conversation with the "Black Dot" string in it. To do this, follow the steps below.
  • First force quit the Messages app.
  • The use Siri to send a reply to the person who sent you the crash string. You can either send a very long reply, or numerous replies, to knock the text off the message screen, or a single reply to knock the text off the conversations screen, depending on how Messages is opening.
  • Open the Messages app and 
  • Tap on the back arrow in the top-left corner to return to the conversation list.
  • Tap on Edit in the top-left corner of the conversation list.
  • Tap the circle to the left of the conversation containing the problematic message. A blue checkmark will appear.
  • Tap on Delete in the bottom-right corner.
Hope it works for you. Please note that the crashing does not have anything to do with the Black Dot Emoji. The crashing is caused by the thousands of invisible characters placed in the text. You could write any message, like "Hello" and insert those invisible characters and would still result in the exact same issue. To fix, simply follow the process above.

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