I was wiping the screen on my iPhone the other day when this message popped up... Didn't know you could send messages from the lock screen?
Please help me shed some light on this mistery
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Isn't there an emergency call facility from the lock screen? Perhaps OP accidentally triggered it.
You can certainly make an emergency call from the lock screen... But AFAIK you can't send or receive messages.
Maybe you had a message notification and while you were wiping your screen you may have slid the message icon to the right, in which case you'd be taken to the messages app to reply. But since you can't reply because you're in airplane mode, it just stops you right there... at least that's what I'd assume, don't really have any evidence to support this.
I have never seen that either. Nor anything with that UI, in fact.
That UI is the iOS 5 version of the old notification popup. They are rarely seen by default on iOS 5.
Well yes, but I mean with buttons.
Maybe you accidentally enabled Siri and somehow muffled sounds got to the point where your phone tried to send a message and therefore you got this dialog.