Two researchers have found an iPhone bug that virus could infect phones using SMS. Will reveal that the iPhone is still unpatched bug in the Black Hat cybersecurity conference in Las Vegas on Thursday. If you receive a text message with a single square of characters, you are advised to immediately turn off your iPhone, and warn that it means that someone has used the error to take charge of their iPhone.

"This is serious. The only thing you can do to stop it turns off the phone," said Charles Miller, a researcher for cybersecurity. "Someone could very quickly on any iPhone in this world."

The two found an error in how the iPhone handles text messages. Once in control, the hacker has complete control over the iPhone, which allows them to make calls, visit websites, turn on the camera and more importantly the errors that you can send via SMS.

Well over a month, who have come to Apple, but have not heard from again.

Charles Miller, is not new in the search for security flaws in the iPhone. Already in 2007, Miller found an error that allowed someone to hijack the iPhone remotely through the browser.

It is not clear whether Apple has included a fix in the iPhone OS 3.1, which recently entered beta 3, so it will not be ready on Thursday.

Be careful out there and maybe more information will come Thursday on a possible revision of Apple.