There is a bug that is causing iPhones to restart when a message is sent to the phone. Users who receive this text in their messaging app will cause the phone to crash or reboot. The text includes arabic and unicode characters. The video shows how this code is affecting iPhones

https://www.youtube.com/watch?v=UI9QXhPP4No

Redditt has been beaming about this issue with users reportedly getting pranked by friends numerous times everyday.

Below is the code to Turn Off an iPhone With a Text Message

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Power
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How to protect yourself from this iphone code till apple fixes the sms restart

If your iPhone is getting bombarded with the new Unicode crash message, follow these steps:

Settings⇒Notifications⇒Messages⇒Show Previews⇒OFF