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Crash iOS with a single text

Apple with egg on its face

A vulnerability in iOS has emerged which causes affected devices to crash when a malformed SMS is sent to it. The message, which has to be specially crafted containing Arabic symbols, causes the phone to switch itself off and the Messages app unable to start once it is turned back on.

Present since iOS6, the problem was found by Reddit users.

The fix, until Apple provide one, is to go into Settings | Notifications | Messages and set "alert style when unlocked" to "none".

Apple's Senior Engineers have admitted they know there is a problem and are working on a fix, according to the Twitter account Apple News.