IPhone 4 five finger lock screen gesture

My girlfriends phone had this dark grey rounded square in the top left corner of her iPhone with a lighter grey circle in the middle, I clicked on the circle and it had options like Device, and Gestures. I clicked on Gestures and pressed 5-finger. It came up with 5 blue rings where, I assume, you should put your fingers but after doing this her touchscreen is unresponsive and she can't unlock or turn off her phone. How do I unlock her phone using this 5 finger gesture?

What

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